ASTROSAT CZTI

Data Quality Report

Orbit 53006

Creation date: 2025-07-16T16:27:51.541791
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_53006cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53006cztM0_level2_quad_clean.evt
Size (bytes)1,137,623,04058,250,880
Size1.1 GB 55.6 MB
Events in quadrant A15,188,00929,547
Events in quadrant B4,992,488621,059
Events in quadrant C9,793,035391,108
Events in quadrant D11,665,081292,782

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493441
B0191321
C0333406
D0389331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143593096.532639%
B61432413.923165%
C6142227337.007489%
D6142318051.774666%

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 7297 6142 5323 5323 72.95% 86.67%
B 7298 6144 112 112 1.53% 1.82%
C 7296 6142 1914 1914 26.23% 31.16%
D 7297 6142 2793 2793 38.28% 45.47%

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 13180969 191468.59 271 264 68.8
A 15 190 336136 4879.02 271 264 68.8
A 4 238 182753 2650.91 271 264 68.8
B 10 254 2075763 15639.02 625 604 132.7
B 5 185 209068 1571.05 625 604 132.7
B 4 81 70336 525.52 625 604 132.7
C 9 38 4253923 28707.82 535 530 148.2
C 15 224 1208494 8153.02 535 530 148.2
C 12 254 997292 6727.54 535 530 148.2
D 2 62 6282747 44382.97 488 466 141.5
D 12 17 1613174 11393.43 488 466 141.5
D 8 176 798115 5635.22 488 466 141.5

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