ASTROSAT CZTI

Data Quality Report

Orbit 57728

Creation date: 2026-05-30T10:17:42.290735
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_125T09_9000006578_57728cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57728cztM0_level2_quad_clean.evt
Size (bytes)574,312,32096,122,880
Size547.7 MB 91.7 MB
Events in quadrant A2,973,425669,330
Events in quadrant B4,208,140692,293
Events in quadrant C8,224,144526,834
Events in quadrant D5,351,900570,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134722
B0168622
C0288723
D0202912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6466691.067120%
B64663194.933498%
C6465153823.789637%
D64654076.295437%

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 7636 6466 3 3 0.04% 0.05%
B 7636 6466 107 107 1.40% 1.65%
C 7635 6465 1332 1332 17.45% 20.60%
D 7635 6465 374 374 4.90% 5.78%

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 7 223 87464 488.47 728 710 177.6
A 3 128 30255 166.35 728 710 177.6
A 3 61 17929 96.95 728 710 177.6
B 4 80 605969 4080.77 704 677 148.3
B 10 16 285171 1918.01 704 677 148.3
B 4 171 220957 1485.09 704 677 148.3
C 12 254 3553023 19992.84 650 643 177.7
C 15 224 1963376 11046.28 650 643 177.7
C 14 254 105137 588.09 650 643 177.7
D 8 160 1967159 10148.07 694 665 193.8
D 8 240 232707 1197.45 694 665 193.8
D 3 224 163018 837.82 694 665 193.8

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