ASTROSAT CZTI

Data Quality Report

Orbit 53124

Creation date: 2025-07-28T20:14:00.327927
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_011T07_9000006488_53124cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53124cztM0_level2_quad_clean.evt
Size (bytes)1,049,722,56067,677,120
Size1001.1 MB 64.5 MB
Events in quadrant A13,896,865165,944
Events in quadrant B9,019,767510,110
Events in quadrant C5,577,138550,328
Events in quadrant D9,867,632373,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456631
B0312781
C0211244
D0338401

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 7286 6438 4705 4705 64.58% 73.08%
B 7287 6438 1387 1387 19.03% 21.54%
C 7286 6437 459 459 6.30% 7.13%
D 7286 6438 2442 2442 33.52% 37.93%

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 11840155 117648.65 395 384 100.6
A 3 62 200083 1984.35 395 384 100.6
A 15 174 107422 1063.6 395 384 100.6
B 10 254 5983305 45859.85 615 595 130.5
B 4 171 126056 961.71 615 595 130.5
B 1 255 112933 861.12 615 595 130.5
C 15 224 1197323 7059.34 616 611 169.5
C 9 38 631908 3723.99 616 611 169.5
C 1 241 554767 3268.94 616 611 169.5
D 12 3 6392062 43057.56 511 485 148.4
D 3 224 315288 2120.71 511 485 148.4
D 2 120 250440 1683.85 511 485 148.4

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