ASTROSAT CZTI

Data Quality Report

Orbit 20210917_A10_053T10_9000004698_level2

Creation date: 2025-12-29T02:45:59.192499
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/AS1A10_053T10_9000004698cztM0_level2.fits modeM0/AS1A10_053T10_9000004698cztM0_level2_quad_clean.evt
Size (bytes)118,820,16053,147,520
Size113.3 MB 50.7 MB
Events in quadrant A786,336213,690
Events in quadrant B733,786211,476
Events in quadrant C636,544200,956
Events in quadrant D643,922184,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248250
B0372020
C0279030
D0341310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115221591.379969%
B115223993.462940%
C11522221119.189377%
D115225965.172713%

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 15087 11522 0 0 0.00% 0.00%
B 15087 11522 0 0 0.00% 0.00%
C 15087 11165 0 0 0.00% 0.00%
D 15087 11519 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 0 29 777 11.29 204 193 51.7
A 0 30 594 7.75 204 193 51.7
A 7 110 575 7.38 204 193 51.7
B 2 9 532 8.51 194 186 40.6
B 3 17 501 7.75 194 186 40.6
B 5 232 476 7.14 194 186 40.6
C 1 80 471 7.04 168 158 44.4
C 1 81 467 6.95 168 158 44.4
C 12 241 447 6.5 168 158 44.4
D 7 3 498 6.65 183 167 49.8
D 10 189 470 6.08 183 167 49.8
D 3 14 461 5.9 183 167 49.8

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