ASTROSAT CZTI

Data Quality Report

Orbit 54544

Creation date: 2025-10-28T04:40:05.516719
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_127T09_9000006520_54544cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54544cztM0_level2_quad_clean.evt
Size (bytes)429,600,96098,930,880
Size409.7 MB 94.3 MB
Events in quadrant A3,242,545661,945
Events in quadrant B3,351,461702,550
Events in quadrant C4,735,246594,073
Events in quadrant D4,064,409580,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142072
B0145572
C0187392
D0167812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65411101.681700%
B65411412.155634%
C65424867.428921%
D65422644.035463%

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 8766 6543 22 22 0.25% 0.34%
B 8766 6541 15 15 0.17% 0.23%
C 8767 6543 329 329 3.75% 5.03%
D 8767 6543 177 177 2.02% 2.71%

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 11 3 134864 719.49 754 734 186.4
A 4 3 50443 266.65 754 734 186.4
A 7 93 44197 233.14 754 734 186.4
B 8 234 108415 665.07 746 720 161.9
B 10 247 51942 316.32 746 720 161.9
B 0 213 48694 296.27 746 720 161.9
C 12 254 607158 3105.46 713 707 195.3
C 4 5 363705 1858.81 713 707 195.3
C 13 3 302600 1545.9 713 707 195.3
D 1 3 572974 2768.9 727 696 206.7
D 6 239 369169 1782.81 727 696 206.7
D 4 160 73224 350.92 727 696 206.7

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