ASTROSAT CZTI

Data Quality Report

Orbit 54312

Creation date: 2025-10-13T12:47:53.868850
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_126T15_9000006516_54312cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54312cztM0_level2_quad_clean.evt
Size (bytes)669,519,36086,866,560
Size638.5 MB 82.8 MB
Events in quadrant A3,682,060640,065
Events in quadrant B3,040,869710,569
Events in quadrant C4,890,486585,449
Events in quadrant D12,657,328233,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158522
B0138952
C0193012
D0421402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65913034.597178%
B6591570.864816%
C65915538.390229%
D6591424164.345319%

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 7746 6592 205 205 2.65% 3.11%
B 7746 6592 11 11 0.14% 0.17%
C 7746 6592 495 495 6.39% 7.51%
D 7745 6591 3375 3375 43.58% 51.21%

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 7 29 861423 5042.18 693 677 170.7
A 4 3 41993 242.03 693 677 170.7
A 3 110 36408 209.31 693 677 170.7
B 7 0 109657 730.66 700 676 149.2
B 0 213 53160 351.88 700 676 149.2
B 10 247 44400 293.15 700 676 149.2
C 14 254 1428010 7890.8 656 649 180.9
C 1 241 531089 2932.4 656 649 180.9
C 15 198 106186 583.43 656 649 180.9
D 8 176 10554139 90629.18 405 385 116.4
D 3 12 241858 2073.62 405 385 116.4
D 2 120 66705 569.52 405 385 116.4

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