ASTROSAT CZTI

Data Quality Report

Orbit 53733

Creation date: 2025-09-03T15:11:18.236195
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_53733cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53733cztM0_level2_quad_clean.evt
Size (bytes)1,020,467,52062,498,880
Size973.2 MB 59.6 MB
Events in quadrant A15,521,60761,978
Events in quadrant B2,920,188643,622
Events in quadrant C9,801,624376,313
Events in quadrant D9,041,310367,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505071
B0133911
C0335141
D0312481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333585192.389073%
B63341832.889170%
C6334251739.737922%
D6334226835.806757%

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 7307 6332 5470 5470 74.86% 86.39%
B 7309 6335 4 4 0.05% 0.06%
C 7309 6335 2039 2039 27.90% 32.19%
D 7309 6335 2009 2009 27.49% 31.71%

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 13007145 140035.61 369 360 92.9
A 3 78 541073 5821.51 369 360 92.9
A 7 160 252557 2715.24 369 360 92.9
B 4 171 80366 544.23 678 654 146.5
B 2 136 32315 216.16 678 654 146.5
B 5 185 32051 214.36 678 654 146.5
C 15 224 3730396 25238.86 536 533 147.8
C 1 241 3294193 22287.2 536 533 147.8
C 3 242 128764 867.7 536 533 147.8
D 1 241 1874593 12667.44 522 501 147.9
D 2 172 1813070 12251.59 522 501 147.9
D 6 239 1502840 10154.67 522 501 147.9

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