ASTROSAT CZTI

Data Quality Report

Orbit 57061

Creation date: 2026-04-15T13:17:35.851138
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_083T10_9000006566_57061cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57061cztM0_level2_quad_clean.evt
Size (bytes)405,414,72090,967,680
Size386.6 MB 86.8 MB
Events in quadrant A2,828,182599,814
Events in quadrant B3,239,496637,927
Events in quadrant C2,889,145577,451
Events in quadrant D5,571,348509,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128591
B0138571
C0130301
D0207601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155540.877335%
B61561832.972710%
C6156791.283301%
D61565078.235867%

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 7140 6156 12 12 0.17% 0.19%
B 7141 6156 62 62 0.87% 1.01%
C 7141 6156 25 25 0.35% 0.41%
D 7140 6156 483 483 6.76% 7.85%

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 8 249 45504 269.36 675 656 166.5
A 3 14 44422 262.86 675 656 166.5
A 3 245 44323 262.27 675 656 166.5
B 10 16 254312 1799.3 656 630 141.0
B 0 63 133517 942.53 656 630 141.0
B 7 252 63811 448.13 656 630 141.0
C 14 254 80340 442.04 661 656 180.3
C 6 223 66779 366.82 661 656 180.3
C 15 209 32766 178.13 661 656 180.3
D 15 142 1674425 9343.57 636 608 179.1
D 12 33 1005096 5607.25 636 608 179.1
D 2 31 89200 494.54 636 608 179.1

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