ASTROSAT CZTI

Data Quality Report

Orbit 57917

Creation date: 2026-06-12T03:07:32.790792
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_125T11_9000006582_57917cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57917cztM0_level2_quad_clean.evt
Size (bytes)433,094,40094,279,680
Size413.0 MB 89.9 MB
Events in quadrant A2,891,490637,651
Events in quadrant B3,530,540674,694
Events in quadrant C3,232,021589,112
Events in quadrant D5,887,611513,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132082
B0151102
C0142472
D0219742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301300.476115%
B63011632.586891%
C63011041.650532%
D630167510.712585%

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 7481 6302 21 21 0.28% 0.33%
B 7481 6302 93 93 1.24% 1.48%
C 7481 6302 87 87 1.16% 1.38%
D 7481 6302 698 698 9.33% 11.08%

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 10 251 146612 866.31 684 667 168.5
A 3 14 35805 208.57 684 667 168.5
A 7 64 30647 177.96 684 667 168.5
B 5 185 665103 4577.81 676 650 145.1
B 7 252 37455 253.57 676 650 145.1
B 0 63 26356 177.1 676 650 145.1
C 15 224 547444 3066.88 651 646 178.3
C 12 252 69156 384.26 651 646 178.3
C 14 254 27642 151.42 651 646 178.3
D 8 160 1393326 7877.65 623 595 176.8
D 3 12 921287 5207.67 623 595 176.8
D 2 249 699191 3951.44 623 595 176.8

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