ASTROSAT CZTI

Data Quality Report

Orbit 53194

Creation date: 2025-07-29T07:32:13.414573
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_9000006490_53194cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53194cztM0_level2_quad_clean.evt
Size (bytes)812,350,08079,842,240
Size774.7 MB 76.1 MB
Events in quadrant A3,033,253633,065
Events in quadrant B3,238,760687,594
Events in quadrant C7,999,215508,811
Events in quadrant D15,307,141144,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138822
B0140242
C0281012
D0498004

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6352831.306675%
B6352610.960327%
C6352139221.914358%
D6351503779.310345%

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 7562 6352 43 43 0.57% 0.68%
B 7562 6353 21 21 0.28% 0.33%
C 7562 6353 1450 1450 19.17% 22.82%
D 7560 6350 5245 5245 69.38% 82.60%

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 0 8 103926 618.41 665 648 167.0
A 15 174 86236 512.49 665 648 167.0
A 3 62 77894 462.54 665 648 167.0
B 4 81 147721 1048.47 668 646 140.3
B 1 255 132245 938.15 668 646 140.3
B 0 213 53292 375.3 668 646 140.3
C 0 240 1812068 10692.06 613 606 169.4
C 15 224 1561043 9210.4 613 606 169.4
C 1 241 981864 5791.82 613 606 169.4
D 15 125 12048809 99050.3 416 396 121.6
D 12 3 378653 3109.66 416 396 121.6
D 2 62 280441 2302.26 416 396 121.6

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