ASTROSAT CZTI

Data Quality Report

Orbit 53746

Creation date: 2025-09-04T11:30:35.151879
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_53746cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53746cztM0_level2_quad_clean.evt
Size (bytes)999,800,64072,478,080
Size953.5 MB 69.1 MB
Events in quadrant A15,862,738111,740
Events in quadrant B3,079,550697,167
Events in quadrant C9,523,391458,856
Events in quadrant D8,037,444469,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516632
B0138442
C0328292
D0284352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6553560985.594384%
B65531241.892263%
C6553210632.137952%
D6553144522.050969%

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 7687 6552 5463 5463 71.07% 83.38%
B 7688 6553 3 3 0.04% 0.05%
C 7688 6553 1769 1769 23.01% 27.00%
D 7688 6553 1280 1280 16.65% 19.53%

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 13791994 150433.37 367 358 91.7
A 4 249 261474 2848.14 367 358 91.7
A 3 78 163089 1775.0 367 358 91.7
B 4 81 48974 312.35 720 695 154.6
B 4 171 37011 234.95 720 695 154.6
B 0 213 28005 176.69 720 695 154.6
C 15 224 5379145 32248.29 605 598 166.8
C 12 252 377755 2261.33 605 598 166.8
C 13 3 362795 2171.63 605 598 166.8
D 1 241 1720151 9690.42 614 585 177.5
D 2 172 1118981 6302.6 614 585 177.5
D 7 30 1016275 5723.81 614 585 177.5

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