ASTROSAT CZTI

Data Quality Report

Orbit 20161228_G06_086T02_9000000936_level2

Creation date: 2018-05-17T20:10:15.848025
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G06_086T02_9000000936cztM0_level2.evt modeM0/AS1G06_086T02_9000000936cztM0_level2_quad_clean.evt
Size (bytes)16,444,756,8002,853,299,520
Size15.3 GB 2.7 GB
Events in quadrant A110,422,21817,888,647
Events in quadrant B114,840,98518,103,841
Events in quadrant C111,149,00917,707,195
Events in quadrant D145,949,25716,805,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04871070
B04974850
C04890580
D05897130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03770
B03720
C03730
D03710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047600
B047640
C047460
D047440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23236026881.156826%
B23239838751.667398%
C23237523691.019473%
D23230279563.424852%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 305391 232878 307 307 0.10% 0.13%
B 305391 232920 729 729 0.24% 0.31%
C 305391 232873 595 595 0.19% 0.26%
D 305391 232758 5351 5351 1.75% 2.30%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 1750024 309.49 27669 27088 5567.1
A 13 170 811368 140.88 27669 27088 5567.1
A 13 248 634625 109.13 27669 27088 5567.1
B 0 228 2441368 457.45 27889 27254 5277.3
B 4 81 2439195 457.04 27889 27254 5277.3
B 12 111 537554 96.7 27889 27254 5277.3
C 9 247 4376105 699.06 26923 27057 6221.3
C 12 16 1409832 222.26 26923 27057 6221.3
C 13 61 211042 29.57 26923 27057 6221.3
D 8 195 13877391 2130.84 26617 25803 6500.5
D 2 63 11359416 1743.49 26617 25803 6500.5
D 12 220 5697965 872.57 26617 25803 6500.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter