ASTROSAT CZTI

Data Quality Report

Orbit 52539

Creation date: 2025-06-15T06:05:10.617729
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_9000006478_52539cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52539cztM0_level2_quad_clean.evt
Size (bytes)779,302,08082,319,040
Size743.2 MB 78.5 MB
Events in quadrant A3,055,236635,797
Events in quadrant B6,077,794612,304
Events in quadrant C10,702,364338,608
Events in quadrant D8,512,399455,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140052
B0225537
C0363182
D0298542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451771.193613%
B645078112.108527%
C6450309748.015504%
D6450163425.333333%

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 7581 6452 30 30 0.40% 0.46%
B 7580 6451 559 559 7.37% 8.67%
C 7579 6450 2400 2400 31.67% 37.21%
D 7580 6450 1370 1370 18.07% 21.24%

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 5 243 118693 687.13 685 666 171.8
A 5 240 54818 315.26 685 666 171.8
A 4 249 44026 252.43 685 666 171.8
B 10 44 1659630 12135.18 644 624 136.7
B 10 254 1102060 8056.7 644 624 136.7
B 10 247 183885 1340.5 644 624 136.7
C 15 248 6397262 47878.88 477 472 133.6
C 15 224 1196728 8953.77 477 472 133.6
C 12 254 509791 3812.17 477 472 133.6
D 8 176 2536428 14840.41 594 567 170.9
D 15 125 1743100 10197.69 594 567 170.9
D 6 42 311812 1821.47 594 567 170.9

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