ASTROSAT CZTI

Data Quality Report

Orbit 57694

Creation date: 2026-05-28T04:26:56.335242
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_125T09_9000006578_57694cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57694cztM0_level2_quad_clean.evt
Size (bytes)799,980,48081,227,520
Size762.9 MB 77.5 MB
Events in quadrant A5,009,415593,927
Events in quadrant B3,960,289668,984
Events in quadrant C3,973,291612,055
Events in quadrant D16,147,810115,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195212
B0166002
C0165023
D0525332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67266699.946476%
B67263364.995540%
C67251071.591078%
D6725540980.431227%

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 7666 6727 566 566 7.38% 8.41%
B 7666 6727 156 156 2.03% 2.32%
C 7665 6726 71 71 0.93% 1.06%
D 7665 6724 5410 5410 70.58% 80.46%

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 14 2123131 12114.25 708 691 175.2
A 3 128 63046 355.9 708 691 175.2
A 4 13 40781 228.82 708 691 175.2
B 10 16 781533 5129.8 711 685 152.2
B 10 247 99402 648.52 711 685 152.2
B 4 80 98837 644.81 711 685 152.2
C 15 224 911854 4781.72 698 690 190.6
C 14 246 104918 546.98 698 690 190.6
C 14 67 97654 508.86 698 690 190.6
D 8 240 14509677 175374.32 281 267 82.7
D 8 160 398619 4814.86 281 267 82.7
D 3 12 26874 321.6 281 267 82.7

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