ASTROSAT CZTI

Data Quality Report

Orbit 53644

Creation date: 2025-08-28T15:19:30.962076
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_022T05_9000006504_53644cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53644cztM0_level2_quad_clean.evt
Size (bytes)885,620,16082,247,040
Size844.6 MB 78.4 MB
Events in quadrant A8,277,332525,537
Events in quadrant B5,649,474652,563
Events in quadrant C11,798,630320,692
Events in quadrant D6,557,731540,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290012
B0210992
C0393722
D0238292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467174226.936756%
B646786613.391062%
C6467345953.486934%
D646787013.452915%

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 7637 6468 1396 1396 18.28% 21.58%
B 7637 6467 503 503 6.59% 7.78%
C 7637 6467 3036 3036 39.75% 46.95%
D 7637 6468 761 761 9.96% 11.77%

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 78 2864217 17256.04 673 656 165.9
A 15 174 1308154 7879.08 673 656 165.9
A 4 191 560363 3372.84 673 656 165.9
B 4 206 1459528 9647.14 709 685 151.2
B 5 172 665003 4393.05 709 685 151.2
B 5 185 322017 2124.93 709 685 151.2
C 1 241 7878489 56014.25 500 496 140.6
C 15 224 1203325 8552.38 500 496 140.6
C 13 49 329079 2336.3 500 496 140.6
D 8 176 1546933 7947.77 685 655 194.6
D 3 224 1185512 6090.09 685 655 194.6
D 10 172 546521 2805.72 685 655 194.6

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