ASTROSAT CZTI

Data Quality Report

Orbit 57394

Creation date: 2026-05-07T22:49:42.885341
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_102T01_9000006572_57394cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57394cztM0_level2_quad_clean.evt
Size (bytes)416,200,32083,949,120
Size396.9 MB 80.1 MB
Events in quadrant A2,607,383576,384
Events in quadrant B2,717,310609,828
Events in quadrant C6,718,921438,738
Events in quadrant D2,915,391514,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119661
B0123441
C0239761
D0127691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5747621.078824%
B5747771.339829%
C5747128822.411693%
D5748430.748086%

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 6907 5747 1 1 0.01% 0.02%
B 6907 5747 7 7 0.10% 0.12%
C 6907 5746 1022 1022 14.80% 17.79%
D 6908 5748 15 15 0.22% 0.26%

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 0 12 60408 382.2 634 617 156.4
A 8 4 30892 193.53 634 617 156.4
A 10 251 27143 169.56 634 617 156.4
B 5 185 103557 781.5 621 597 131.7
B 0 63 43932 328.93 621 597 131.7
B 0 153 26013 192.91 621 597 131.7
C 15 224 4232521 28974.36 534 530 146.1
C 13 3 118811 809.81 534 530 146.1
C 14 254 68005 461.97 534 530 146.1
D 14 49 135302 776.32 606 576 173.5
D 8 240 66286 378.64 606 576 173.5
D 3 12 58165 331.84 606 576 173.5

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