ASTROSAT CZTI

Data Quality Report

Orbit 53137

Creation date: 2025-07-26T12:32:04.991544
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/AS1C09_011T07_9000006488_53137cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53137cztM0_level2_quad_clean.evt
Size (bytes)781,318,08069,626,880
Size745.1 MB 66.4 MB
Events in quadrant A15,327,3196,360
Events in quadrant B3,415,842625,456
Events in quadrant C5,606,236526,416
Events in quadrant D4,095,484521,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495741
B0145801
C0209223
D0165631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140609199.201954%
B61411562.540303%
C61405759.364821%
D61402393.892508%

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 7290 6141 5356 5356 73.47% 87.22%
B 7291 6142 85 85 1.17% 1.38%
C 7290 6141 494 494 6.78% 8.04%
D 7290 6141 211 211 2.89% 3.44%

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 9 191 14356838 261972.34 214 210 54.8
A 3 14 31436 569.8 214 210 54.8
A 0 8 23219 419.86 214 210 54.8
B 1 255 282257 2154.63 620 599 130.7
B 0 213 177680 1354.64 620 599 130.7
B 10 254 173591 1323.36 620 599 130.7
C 9 38 1111990 6916.94 584 579 160.7
C 15 224 651958 4053.9 584 579 160.7
C 13 3 552502 3434.93 584 579 160.7
D 3 224 340447 1986.18 596 570 171.1
D 8 176 290867 1696.44 596 570 171.1
D 1 0 203792 1187.59 596 570 171.1

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