ASTROSAT CZTI

Data Quality Report

Orbit 53790

Creation date: 2025-09-07T17:56:14.855211
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_022T04_9000006506_53790cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53790cztM0_level2_quad_clean.evt
Size (bytes)779,564,16067,933,440
Size743.5 MB 64.8 MB
Events in quadrant A12,972,144144,511
Events in quadrant B3,515,194600,635
Events in quadrant C5,825,160479,536
Events in quadrant D6,081,120414,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426903
B0148121
C0214311
D0223261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5973465577.934036%
B59743475.808504%
C597497716.354202%
D5974132222.129227%

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 7123 5973 4208 4208 59.08% 70.45%
B 7124 5975 202 202 2.84% 3.38%
C 7124 5975 876 876 12.30% 14.66%
D 7124 5975 1211 1211 17.00% 20.27%

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 63 11483329 150287.42 303 295 76.4
A 8 249 206532 2699.18 303 295 76.4
A 8 6 22985 296.96 303 295 76.4
B 5 185 732172 5421.47 624 600 134.9
B 0 213 77004 566.21 624 600 134.9
B 4 171 72378 531.93 624 600 134.9
C 1 241 1671016 10501.54 572 566 159.1
C 15 224 1631277 10251.71 572 566 159.1
C 7 64 67455 420.51 572 566 159.1
D 2 153 2734178 17392.89 548 524 157.2
D 2 172 696938 4430.94 548 524 157.2
D 3 224 119565 757.4 548 524 157.2

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