ASTROSAT CZTI

Data Quality Report

Orbit 55151

Creation date: 2025-12-08T02:17:09.193739
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_55151cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55151cztM0_level2_quad_clean.evt
Size (bytes)583,542,72092,185,920
Size556.5 MB 87.9 MB
Events in quadrant A6,596,917589,274
Events in quadrant B5,807,910588,079
Events in quadrant C3,818,002599,426
Events in quadrant D4,849,612539,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242622
B0223592
C0162712
D0194527

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680781511.972969%
B6807107415.777876%
C68071572.306449%
D68065478.037026%

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 7712 6807 733 733 9.50% 10.77%
B 7712 6807 842 842 10.92% 12.37%
C 7712 6807 105 105 1.36% 1.54%
D 7710 6805 490 490 6.36% 7.20%

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 3469070 19893.36 696 678 174.3
A 0 8 369798 2117.13 696 678 174.3
A 4 78 29809 167.08 696 678 174.3
B 2 249 2746446 18678.93 681 655 147.0
B 4 81 198276 1344.37 681 655 147.0
B 5 185 42412 284.06 681 655 147.0
C 13 3 283463 1451.74 704 696 194.8
C 9 38 224868 1150.91 704 696 194.8
C 6 223 165813 847.72 704 696 194.8
D 11 129 1684294 8600.61 686 655 195.8
D 11 176 182185 927.32 686 655 195.8
D 3 12 107744 547.05 686 655 195.8

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