ASTROSAT CZTI

Data Quality Report

Orbit 52138

Creation date: 2025-05-19T11:15:22.385574
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/AS1C09_011T07_9000006470_52138cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52138cztM0_level2_quad_clean.evt
Size (bytes)78,200,6407,963,200
Size74.6 MB 7.6 MB
Events in quadrant A468,11574,050
Events in quadrant B619,05572,026
Events in quadrant C794,28933,064
Events in quadrant D949,73596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010078
B010186
C010786
D010585

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139903307917352139899969732654
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120819899
B01739614850
C02398021176
D04085137777

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106120.188501%
B987353.546099%
C65513821.068702%
D37336898.659517%

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 5603 1478 0 0 0.00% 0.00%
B 5620 1373 30 30 0.53% 2.18%
C 5639 931 112 112 1.99% 12.03%
D 4823 403 347 347 7.19% 86.10%

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 14 254 17426 603.39 107 103 28.7
A 4 3 8341 286.95 107 103 28.7
A 11 3 7525 258.52 107 103 28.7
B 4 81 151129 6562.08 96 93 23.0
B 12 32 36718 1591.25 96 93 23.0
B 7 252 8681 373.12 96 93 23.0
C 15 224 442972 25635.98 56 55 17.3
C 13 3 23685 1367.7 56 55 17.3
C 4 5 19287 1113.15 56 55 17.3
D 6 42 723483 127874.55 14 13 5.7
D 15 94 82510 14581.49 14 13 5.7
D 12 3 56825 10041.62 14 13 5.7

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