ASTROSAT CZTI

Data Quality Report

Orbit 57396

Creation date: 2026-05-08T02:50:16.253440
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_102T01_9000006572_57396cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57396cztM0_level2_quad_clean.evt
Size (bytes)498,896,64083,111,040
Size475.8 MB 79.3 MB
Events in quadrant A3,092,843564,560
Events in quadrant B3,184,809582,972
Events in quadrant C8,247,180427,252
Events in quadrant D3,430,891482,099

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014522433
B0155941297
C029899835
D015515532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01384
B01382
C01382
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601821.242236%
B65431111.696470%
C6573170025.863380%
D6595951.440485%

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 7813 6925 49 49 0.63% 0.71%
B 7785 6859 47 47 0.60% 0.69%
C 7785 6884 1308 1308 16.80% 19.00%
D 7811 6924 62 62 0.79% 0.90%

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 5 242 159761 925.82 702 684 171.8
A 0 12 84114 485.56 702 684 171.8
A 3 14 83802 483.74 702 684 171.8
B 4 171 258857 1762.27 682 658 146.5
B 10 247 86479 585.75 682 658 146.5
B 0 245 43844 294.76 682 658 146.5
C 15 224 4818022 29887.85 593 590 161.2
C 12 249 364277 2256.35 593 590 161.2
C 14 254 206223 1275.77 593 590 161.2
D 3 12 313619 1653.1 668 636 189.3
D 8 240 245838 1295.1 668 636 189.3
D 3 224 68213 356.93 668 636 189.3

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