ASTROSAT CZTI

Data Quality Report

Orbit 54352

Creation date: 2025-10-15T07:32:56.895481
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_54352cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54352cztM0_level2_quad_clean.evt
Size (bytes)584,671,68093,487,680
Size557.6 MB 89.2 MB
Events in quadrant A3,092,486664,206
Events in quadrant B3,301,620706,757
Events in quadrant C3,188,414637,521
Events in quadrant D11,513,555333,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146232
B0150373
C0148782
D0390542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022310.441470%
B7021670.954280%
C7022410.583879%
D7022338848.248362%

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 8737 7024 3 3 0.03% 0.04%
B 8736 7022 21 21 0.24% 0.30%
C 8737 7024 22 22 0.25% 0.31%
D 8736 7022 3251 3251 37.21% 46.30%

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 7 206 150908 815.23 741 721 184.2
A 15 174 21610 113.39 741 721 184.2
A 0 8 16989 88.3 741 721 184.2
B 0 171 106313 666.91 734 704 158.4
B 9 251 75804 474.25 734 704 158.4
B 0 213 66127 413.14 734 704 158.4
C 14 254 153245 770.5 723 715 198.0
C 12 252 44744 222.41 723 715 198.0
C 5 144 39460 195.72 723 715 198.0
D 8 176 8161269 56934.2 503 480 143.3
D 15 108 833505 5811.65 503 480 143.3
D 12 3 225900 1572.66 503 480 143.3

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