ASTROSAT CZTI

Data Quality Report

Orbit 53831

Creation date: 2025-09-10T04:33:33.092086
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_53831cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53831cztM0_level2_quad_clean.evt
Size (bytes)599,417,28088,954,560
Size571.6 MB 84.8 MB
Events in quadrant A2,919,958638,234
Events in quadrant B3,071,103678,038
Events in quadrant C8,475,113412,054
Events in quadrant D7,214,011508,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136202
B0138492
C0297442
D0260328

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6547420.641515%
B6547560.855354%
C6547209231.953567%
D654694514.436297%

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 7622 6548 23 23 0.30% 0.35%
B 7622 6548 16 16 0.21% 0.24%
C 7622 6547 1979 1979 25.96% 30.23%
D 7621 6546 971 971 12.74% 14.83%

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 4 249 59337 340.18 696 677 172.4
A 0 8 29833 169.08 696 677 172.4
A 12 17 18504 103.38 696 677 172.4
B 7 0 64621 432.19 692 668 148.0
B 0 213 53564 357.47 692 668 148.0
B 0 197 36605 242.86 692 668 148.0
C 1 241 4026402 25673.96 563 558 156.8
C 15 224 1635021 10423.44 563 558 156.8
C 12 2 172668 1097.59 563 558 156.8
D 15 93 2907345 15948.6 642 615 182.3
D 8 176 462234 2532.8 642 615 182.3
D 2 172 354638 1942.45 642 615 182.3

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