ASTROSAT CZTI

Data Quality Report

Orbit 55429

Creation date: 2025-12-26T18:00:06.175054
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_099T01_9000006536_55429cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55429cztM0_level2_quad_clean.evt
Size (bytes)569,499,84092,145,600
Size543.1 MB 87.9 MB
Events in quadrant A4,324,728626,641
Events in quadrant B3,082,270688,317
Events in quadrant C3,119,134611,469
Events in quadrant D10,032,701394,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176152
B0143262
C0144142
D0343842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67173405.061784%
B67181452.158380%
C67181001.488538%
D6718244336.364990%

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 8657 6719 206 206 2.38% 3.07%
B 8658 6720 5 5 0.06% 0.07%
C 8658 6720 27 27 0.31% 0.40%
D 8658 6720 2002 2002 23.12% 29.79%

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 78 589404 3334.89 714 696 176.5
A 4 159 547920 3099.89 714 696 176.5
A 0 8 292033 1650.35 714 696 176.5
B 9 251 106842 683.5 718 690 155.3
B 10 247 40733 257.83 718 690 155.3
B 0 199 38708 244.79 718 690 155.3
C 12 252 102787 533.31 702 697 191.4
C 10 64 86593 448.71 702 697 191.4
C 9 38 49760 256.3 702 697 191.4
D 11 129 7079283 42220.24 595 567 167.7
D 2 249 226154 1345.49 595 567 167.7
D 3 12 174220 1035.73 595 567 167.7

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