ASTROSAT CZTI

Data Quality Report

Orbit 53734

Creation date: 2025-09-03T16:18:57.208655
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_022T04_9000006506_53734cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53734cztM0_level2_quad_clean.evt
Size (bytes)1,074,942,72068,480,640
Size1.0 GB 65.3 MB
Events in quadrant A17,156,13820,170
Events in quadrant B3,120,529695,665
Events in quadrant C10,342,366436,303
Events in quadrant D8,639,814441,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557801
B0144701
C0354981
D0304121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6883674097.922418%
B68831291.874183%
C6884241335.052295%
D6884190827.716444%

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 7697 6883 6213 6213 80.72% 90.27%
B 7698 6884 17 17 0.22% 0.25%
C 7699 6884 1935 1935 25.13% 28.11%
D 7699 6885 1628 1628 21.15% 23.65%

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 63 15025420 227830.07 262 255 65.9
A 3 78 894865 13565.18 262 255 65.9
A 7 160 95761 1448.18 262 255 65.9
B 0 213 73890 475.43 723 696 154.0
B 10 247 37585 239.61 723 696 154.0
B 4 171 26260 166.05 723 696 154.0
C 15 224 4943255 30210.68 593 588 163.6
C 1 241 1803644 11020.68 593 588 163.6
C 3 242 937240 5725.02 593 588 163.6
D 8 176 4510859 26390.55 595 570 170.9
D 6 239 777189 4544.14 595 570 170.9
D 1 241 132660 772.88 595 570 170.9

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