ASTROSAT CZTI

Data Quality Report

Orbit 55204

Creation date: 2025-12-11T15:54:19.923247
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_022T16_9000006532_55204cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55204cztM0_level2_quad_clean.evt
Size (bytes)479,885,760109,344,960
Size457.7 MB 104.3 MB
Events in quadrant A3,473,904720,903
Events in quadrant B3,353,675773,629
Events in quadrant C4,291,755670,575
Events in quadrant D6,039,572605,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161640
B0160290
C0186934
D0235740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7781150.192777%
B7782170.218453%
C77811652.120550%
D77815997.698239%

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 7781 7781 9 9 0.12% 0.12%
B 7782 7782 12 12 0.15% 0.15%
C 7781 7781 129 129 1.66% 1.66%
D 7781 7781 536 536 6.89% 6.89%

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 121147 600.45 807 787 200.5
A 3 14 83906 414.66 807 787 200.5
A 4 249 43641 213.79 807 787 200.5
B 10 247 108164 619.1 794 763 173.5
B 0 182 30298 170.25 794 763 173.5
B 6 255 27123 151.95 794 763 173.5
C 1 16 524120 2454.51 769 760 213.2
C 13 3 391203 1831.14 769 760 213.2
C 15 193 145713 679.82 769 760 213.2
D 2 249 1896019 8916.14 748 717 212.6
D 11 129 678428 3188.18 748 717 212.6
D 5 38 174748 818.7 748 717 212.6

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