ASTROSAT CZTI

Data Quality Report

Orbit 20190305_A05_167T01_9000002758_level2

Creation date: 2019-03-06T15:34:28.035895
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/AS1A05_167T01_9000002758cztM0_level2_bc.evt modeM0/AS1A05_167T01_9000002758cztM0_level2_quad_clean.evt
Size (bytes)1,708,473,600587,237,760
Size1.6 GB 560.0 MB
Events in quadrant A9,684,2863,734,902
Events in quadrant B9,832,6763,851,757
Events in quadrant C9,814,8983,735,792
Events in quadrant D19,502,2753,537,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08740
B08740
C08740
D08740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0918560
B0924440
C0934230
D01270790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A426216551.536801%
B426216661.562610%
C426217731.813660%
D4262130217.088055%

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 52362 42618 34 34 0.06% 0.08%
B 52362 42618 6 6 0.01% 0.01%
C 52362 42614 9 9 0.02% 0.02%
D 52362 42616 439 439 0.84% 1.03%

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 14 111 321697 619.51 2383 2339 515.5
A 13 254 70340 131.91 2383 2339 515.5
A 4 2 57915 107.81 2383 2339 515.5
B 0 229 127479 277.27 2425 2363 451.2
B 0 190 123963 269.48 2425 2363 451.2
B 7 220 122812 266.93 2425 2363 451.2
C 4 254 495970 910.08 2344 2338 542.4
C 9 54 243772 445.12 2344 2338 542.4
C 3 233 28889 48.95 2344 2338 542.4
D 7 238 5210478 9893.19 2320 2245 526.4
D 1 52 4822336 9155.9 2320 2245 526.4
D 14 34 176159 330.35 2320 2245 526.4

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