ASTROSAT CZTI

Data Quality Report

Orbit 53540

Creation date: 2025-08-21T14:14:43.847196
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/AS1A14_004T05_9000006502_53540cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53540cztM0_level2_quad_clean.evt
Size (bytes)686,399,04091,111,680
Size654.6 MB 86.9 MB
Events in quadrant A9,148,995502,102
Events in quadrant B3,918,222697,575
Events in quadrant C7,619,441503,564
Events in quadrant D4,201,425586,977

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318552
B0161702
C0271902
D0170852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6712193828.873659%
B67121812.696663%
C6712151222.526818%
D67122503.724672%

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 7706 6711 1575 1575 20.44% 23.47%
B 7707 6712 51 51 0.66% 0.76%
C 7707 6712 1404 1404 18.22% 20.92%
D 7707 6712 185 185 2.40% 2.76%

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 3 63 5347253 32243.43 669 653 165.8
A 15 174 874043 5267.1 669 653 165.8
A 3 62 189503 1138.89 669 653 165.8
B 10 28 191301 1212.99 736 710 157.1
B 5 172 145380 920.73 736 710 157.1
B 0 213 143273 907.32 736 710 157.1
C 1 241 3828163 21895.88 641 636 174.8
C 15 224 1000849 5721.85 641 636 174.8
C 7 64 48187 272.02 641 636 174.8
D 2 120 298878 1459.71 719 686 204.3
D 2 153 206007 1005.09 719 686 204.3
D 2 249 199892 975.15 719 686 204.3

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