ASTROSAT CZTI

Data Quality Report

Orbit 38178

Creation date: 2024-06-27T21:49:24.253531
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/AS1A07_145T01_9000005370_38178cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38178cztM0_level2_quad_clean.evt
Size (bytes)456,439,68096,655,680
Size435.3 MB 92.2 MB
Events in quadrant A3,071,043683,633
Events in quadrant B2,753,963698,148
Events in quadrant C3,047,286658,883
Events in quadrant D7,558,542467,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126833
B0121952
C0126912
D0263702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977140.234231%
B5977140.234231%
C5977180.301154%
D5977156426.166973%

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 7261 5978 3 3 0.04% 0.05%
B 7260 5976 7 7 0.10% 0.12%
C 7260 5976 8 8 0.11% 0.13%
D 7260 5976 1585 1585 21.83% 26.52%

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 10 83 405084 2920.43 671 654 138.5
A 12 189 35255 249.86 671 654 138.5
A 9 143 28112 198.28 671 654 138.5
B 4 171 55120 422.82 667 649 128.8
B 0 230 29093 220.79 667 649 128.8
B 15 85 17818 133.27 667 649 128.8
C 15 214 248122 1623.37 651 652 152.4
C 14 254 177671 1161.22 651 652 152.4
C 3 233 42550 274.85 651 652 152.4
D 12 227 4332957 32309.88 547 532 134.1
D 12 235 405404 3019.41 547 532 134.1
D 13 171 299403 2228.89 547 532 134.1

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