ASTROSAT CZTI

Data Quality Report

Orbit 20160909_G05_102T01_9000000650_level2

Creation date: 2025-11-05T04:21:26.384431
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G05_102T01_9000000650cztM0_level2.fits modeM0/AS1G05_102T01_9000000650cztM0_level2_quad_clean.evt
Size (bytes)801,028,800789,943,680
Size763.9 MB 753.3 MB
Events in quadrant A4,834,0144,692,262
Events in quadrant B4,641,9324,669,709
Events in quadrant C4,777,7004,559,336
Events in quadrant D4,108,2984,106,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01779100
B01933400
C01770320
D02024060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017560
B017560
C017560
D017560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A860139721.130062%
B8601315251.772988%
C860166830.794038%
D8601723432.723880%

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 100311 86017 0 0 0.00% 0.00%
B 100311 86019 0 0 0.00% 0.00%
C 100311 86020 0 0 0.00% 0.00%
D 100311 85998 0 0 0.00% 0.00%

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 14 188 4866 11.46 1254 1166 322.8
A 0 29 4609 10.67 1254 1166 322.8
A 14 204 4214 9.44 1254 1166 322.8
B 2 9 4036 11.62 1227 1165 247.0
B 12 226 3313 8.7 1227 1165 247.0
B 5 128 3222 8.33 1227 1165 247.0
C 1 80 3478 6.92 1261 1165 334.2
C 1 81 3415 6.73 1261 1165 334.2
C 12 241 3296 6.38 1261 1165 334.2
D 11 82 3224 6.93 1168 1062 312.2
D 3 14 3177 6.77 1168 1062 312.2
D 6 231 3060 6.4 1168 1062 312.2

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