ASTROSAT CZTI

Data Quality Report

Orbit 50972

Creation date: 2025-03-01T16:28:00.269194
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/AS1C07_001T02_9000006452_50972cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50972cztM0_level2_quad_clean.evt
Size (bytes)571,913,28086,751,360
Size545.4 MB 82.7 MB
Events in quadrant A7,316,647484,776
Events in quadrant B3,399,529656,435
Events in quadrant C4,443,137557,498
Events in quadrant D5,530,944496,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259641
B0145071
C0174291
D0207991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186151424.474620%
B61851562.522231%
C61853776.095392%
D618575312.174616%

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 7321 6187 1308 1308 17.87% 21.14%
B 7320 6186 48 48 0.66% 0.78%
C 7320 6186 306 306 4.18% 4.95%
D 7320 6186 681 681 9.30% 11.01%

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 3020835 20337.97 596 582 148.5
A 12 80 1129169 7599.75 596 582 148.5
A 8 43 346171 2327.15 596 582 148.5
B 4 81 241853 1759.96 653 631 137.1
B 12 3 153872 1118.05 653 631 137.1
B 8 128 96727 701.12 653 631 137.1
C 15 147 447243 2601.13 622 615 171.7
C 4 12 230770 1340.41 622 615 171.7
C 7 87 211419 1227.71 622 615 171.7
D 8 176 2019252 11655.94 610 587 173.2
D 2 216 365824 2108.91 610 587 173.2
D 14 178 173819 1000.25 610 587 173.2

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