ASTROSAT CZTI

Data Quality Report

Orbit 57868

Creation date: 2026-06-08T23:10:31.602892
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_125T11_9000006582_57868cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57868cztM0_level2_quad_clean.evt
Size (bytes)599,469,12083,612,160
Size571.7 MB 79.7 MB
Events in quadrant A2,694,891602,856
Events in quadrant B3,195,162637,810
Events in quadrant C11,558,135313,463
Events in quadrant D4,249,509535,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128551
B0139871
C0387131
D0168161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6340470.741325%
B6341931.466646%
C6341321850.749093%
D63411782.807128%

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 7130 6340 1 1 0.01% 0.02%
B 7131 6341 17 17 0.24% 0.27%
C 7131 6341 3188 3188 44.71% 50.28%
D 7131 6342 155 155 2.17% 2.44%

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 3 245 18178 103.55 682 665 169.1
A 3 128 13778 77.53 682 665 169.1
A 7 64 12804 71.77 682 665 169.1
B 5 172 223943 1547.31 666 640 144.3
B 4 158 73969 508.11 666 640 144.3
B 7 252 50555 345.87 666 640 144.3
C 9 38 7809644 55719.33 511 505 140.2
C 15 224 834996 5954.21 511 505 140.2
C 2 12 734467 5236.92 511 505 140.2
D 12 110 862132 4671.63 651 621 184.4
D 2 153 380448 2059.65 651 621 184.4
D 2 31 227330 1229.35 651 621 184.4

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