ASTROSAT CZTI

Data Quality Report

Orbit 53291

Creation date: 2025-08-04T21:14:04.084629
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_011T08_9000006492_53291cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53291cztM0_level2_quad_clean.evt
Size (bytes)783,872,64078,108,480
Size747.6 MB 74.5 MB
Events in quadrant A3,450,786615,031
Events in quadrant B4,490,221642,522
Events in quadrant C14,913,304159,940
Events in quadrant D5,658,105494,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149381
B0177271
C0486001
D0211031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64961512.324507%
B64973214.940742%
C6497489075.265507%
D649787013.390796%

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 7286 6497 78 78 1.07% 1.20%
B 7287 6498 176 176 2.42% 2.71%
C 7287 6498 4708 4708 64.61% 72.45%
D 7287 6498 813 813 11.16% 12.51%

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 181468 1056.46 688 671 171.1
A 5 240 137400 798.96 688 671 171.1
A 15 174 117935 685.22 688 671 171.1
B 10 28 616266 4266.78 674 650 144.3
B 4 81 277752 1920.57 674 650 144.3
B 8 234 269632 1864.29 674 650 144.3
C 1 241 11325735 109944.88 368 364 103.0
C 15 224 1325438 12863.6 368 364 103.0
C 1 240 362309 3513.7 368 364 103.0
D 11 176 2527574 14202.69 631 603 177.9
D 3 12 111737 624.62 631 603 177.9
D 5 70 90621 505.94 631 603 177.9

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