ASTROSAT CZTI

Data Quality Report

Orbit 53124

Creation date: 2025-07-28T19:54:19.538274
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/AS1A13_003T01_9000006486_53124cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53124cztM0_level2_quad_clean.evt
Size (bytes)1,049,722,56067,671,360
Size1001.1 MB 64.5 MB
Events in quadrant A13,896,865165,719
Events in quadrant B9,019,767510,551
Events in quadrant C5,577,138549,822
Events in quadrant D9,867,632373,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456631
B0312781
C0211244
D0338401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6436491876.413922%
B6437164925.617524%
C64364707.302672%
D6436246538.300186%

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 7285 6435 4250 4250 58.34% 66.05%
B 7287 6438 1310 1310 17.98% 20.35%
C 7286 6438 425 425 5.83% 6.60%
D 7286 6438 2137 2137 29.33% 33.19%

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 9 191 11839932 117645.6 395 384 100.6
A 3 62 200073 1984.24 395 384 100.6
A 15 174 107422 1063.6 395 384 100.6
B 10 254 5984578 45866.59 615 595 130.5
B 4 171 126056 961.65 615 595 130.5
B 1 255 112935 861.07 615 595 130.5
C 15 224 1197339 7059.18 616 611 169.5
C 9 38 632180 3725.46 616 611 169.5
C 1 241 554792 3268.97 616 611 169.5
D 12 3 6392632 43056.91 511 485 148.5
D 3 224 315288 2120.48 511 485 148.5
D 2 120 250446 1683.71 511 485 148.5

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