ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000146_level2

Creation date: 2017-10-31T20:18:15.828799
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/AS1P01_889T01_9000000146cztM0_level2.evt modeM0/AS1P01_889T01_9000000146cztM0_level2_quad_clean.evt
Size (bytes)297,167,04033,986,880
Size283.4 MB 32.4 MB
Events in quadrant A2,043,163224,835
Events in quadrant B2,610,892219,930
Events in quadrant C2,102,897219,331
Events in quadrant D2,103,763216,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075550
B092270
C077050
D077480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204410.048924%
B2044562.739726%
C204400.000000%
D2044271.320939%

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 2044 2044 7 7 0.34% 0.34%
B 2044 2044 150 150 7.34% 7.34%
C 2044 2044 19 19 0.93% 0.93%
D 2044 2044 71 71 3.47% 3.47%

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 11 79 2051 11.61 532 538 130.3
A 3 111 1635 8.42 532 538 130.3
A 14 203 1290 5.77 532 538 130.3
B 8 38 454962 3451.98 551 555 131.6
B 0 220 34201 255.6 551 555 131.6
B 15 85 6674 46.48 551 555 131.6
C 8 208 180733 1351.11 478 494 133.4
C 9 83 19168 139.98 478 494 133.4
C 3 79 9931 70.74 478 494 133.4
D 7 207 223319 1547.26 463 477 144.0
D 1 4 51828 356.54 463 477 144.0
D 13 170 22392 152.16 463 477 144.0

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