ASTROSAT CZTI

Data Quality Report

Orbit 53239

Creation date: 2025-08-01T08:21:33.764064
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_011T06_9000006490_53239cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53239cztM0_level2_quad_clean.evt
Size (bytes)621,443,52063,947,520
Size592.7 MB 61.0 MB
Events in quadrant A6,203,002379,604
Events in quadrant B5,190,773460,480
Events in quadrant C7,435,725314,845
Events in quadrant D3,787,869431,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218931
B0188021
C0255901
D0148151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4990132826.613226%
B499074814.989980%
C4990181036.272545%
D49902164.328657%

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 5005 4991 1124 1124 22.46% 22.52%
B 5005 4991 500 500 9.99% 10.02%
C 5004 4989 1658 1658 33.13% 33.23%
D 5005 4991 202 202 4.04% 4.05%

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 2587438 22583.1 456 446 114.6
A 0 8 783538 6835.99 456 446 114.6
A 14 254 394268 3437.86 456 446 114.6
B 12 33 2381214 23013.12 489 473 103.5
B 4 81 247173 2384.69 489 473 103.5
B 10 254 186483 1798.04 489 473 103.5
C 1 241 2560280 22589.93 408 404 113.3
C 15 224 1110556 9796.67 408 404 113.3
C 9 38 906818 7998.76 408 404 113.3
D 11 245 665057 4709.37 490 467 141.1
D 3 12 324771 2298.06 490 467 141.1
D 2 120 227060 1605.67 490 467 141.1

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