ASTROSAT CZTI

Data Quality Report

Orbit 57760

Creation date: 2026-06-01T14:11:56.515587
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_083T16_9000006580_57760cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57760cztM0_level2_quad_clean.evt
Size (bytes)538,441,92093,144,960
Size513.5 MB 88.8 MB
Events in quadrant A3,060,473616,995
Events in quadrant B5,478,472625,273
Events in quadrant C6,120,352573,323
Events in quadrant D4,751,272536,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142711
B0210621
C0229111
D0189931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67102263.368107%
B671068610.223547%
C67105337.943368%
D67105367.988077%

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 6995 6711 11 11 0.16% 0.16%
B 6995 6711 281 281 4.02% 4.19%
C 6995 6711 268 268 3.83% 3.99%
D 6995 6711 356 356 5.09% 5.30%

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 61 116346 649.24 721 700 178.1
A 3 245 67090 372.72 721 700 178.1
A 3 128 38269 210.91 721 700 178.1
B 10 16 948554 6368.16 691 665 148.8
B 4 80 572268 3840.17 691 665 148.8
B 4 142 512466 3438.41 691 665 148.8
C 15 224 1403327 7493.76 691 683 187.2
C 9 38 958294 5116.13 691 683 187.2
C 12 254 828387 4422.09 691 683 187.2
D 2 153 758372 3944.62 690 659 192.1
D 2 31 604131 3141.65 690 659 192.1
D 3 12 342178 1777.93 690 659 192.1

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