ASTROSAT CZTI

Data Quality Report

Orbit 57229

Creation date: 2026-05-01T11:23:13.591049
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_070T08_9000006568_57229cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57229cztM0_level2_quad_clean.evt
Size (bytes)386,303,04085,561,920
Size368.4 MB 81.6 MB
Events in quadrant A2,847,283565,832
Events in quadrant B2,953,442599,992
Events in quadrant C5,311,039494,497
Events in quadrant D2,722,390512,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129611
B0130911
C0200632
D0126331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59751071.790795%
B59761272.125167%
C597570211.748954%
D5975440.736402%

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 6885 5976 49 49 0.71% 0.82%
B 6886 5977 45 45 0.65% 0.75%
C 6885 5976 561 561 8.15% 9.39%
D 6885 5976 21 21 0.31% 0.35%

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 64 220433 1408.36 632 617 156.1
A 13 248 73156 464.76 632 617 156.1
A 10 251 34574 217.56 632 617 156.1
B 10 16 131410 977.15 616 593 133.9
B 10 247 75349 558.4 616 593 133.9
B 1 238 53009 391.53 616 593 133.9
C 15 224 2961154 18422.33 580 572 160.7
C 12 252 40553 248.78 580 572 160.7
C 14 246 17036 102.44 580 572 160.7
D 8 240 108170 623.2 608 581 172.6
D 7 96 65214 374.38 608 581 172.6
D 5 173 43202 246.88 608 581 172.6

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