ASTROSAT CZTI

Data Quality Report

Orbit 53585

Creation date: 2025-08-25T12:07:17.782899
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_004T05_9000006502_53585cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53585cztM0_level2_quad_clean.evt
Size (bytes)792,218,88086,414,400
Size755.5 MB 82.4 MB
Events in quadrant A4,559,111637,120
Events in quadrant B6,649,663635,548
Events in quadrant C9,433,101498,393
Events in quadrant D8,179,575391,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179282
B0241433
C0326162
D0288212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65114587.034250%
B6510113217.388633%
C6510178427.403994%
D6510240636.958525%

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 7621 6512 265 265 3.48% 4.07%
B 7620 6511 575 575 7.55% 8.83%
C 7620 6511 1311 1311 17.20% 20.14%
D 7620 6510 1457 1457 19.12% 22.38%

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 62 676987 3716.36 737 718 182.0
A 15 174 555001 3046.0 737 718 182.0
A 3 63 129088 705.44 737 718 182.0
B 4 206 2407148 16018.66 701 677 150.2
B 4 81 519007 3450.26 701 677 150.2
B 5 185 423293 2813.14 701 677 150.2
C 13 3 3037585 17103.14 650 645 177.6
C 15 224 2697386 15187.24 650 645 177.6
C 1 241 428611 2410.18 650 645 177.6
D 8 176 5255360 35160.65 518 494 149.5
D 7 70 172981 1154.12 518 494 149.5
D 13 153 170998 1140.85 518 494 149.5

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