ASTROSAT CZTI

Data Quality Report

Orbit 09112

Creation date: 2024-06-27T15:41:26.613589
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/AS1A03_105T01_9000001268_09112cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09112cztM0_level2_quad_clean.evt
Size (bytes)862,485,120161,501,760
Size822.5 MB 154.0 MB
Events in quadrant A6,892,9231,008,107
Events in quadrant B6,222,1291,012,815
Events in quadrant C5,870,665991,898
Events in quadrant D6,248,542974,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02870288
B02711176
C02659370
D027880140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02682
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13087750.573088%
B130871110.848170%
C13089660.504240%
D130681020.780533%

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 14992 13123 3 3 0.02% 0.02%
B 14992 13121 9 9 0.06% 0.07%
C 14992 13122 0 0 0.00% 0.00%
D 14992 13122 42 42 0.28% 0.32%

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 8 5 692805 2194.12 1551 1517 315.1
A 1 162 103799 324.64 1551 1517 315.1
A 15 174 75950 236.25 1551 1517 315.1
B 0 214 80471 263.48 1556 1519 299.7
B 0 229 60062 195.37 1556 1519 299.7
B 12 111 34000 108.4 1556 1519 299.7
C 13 61 11034 27.4 1501 1506 347.7
C 1 3 6388 14.04 1501 1506 347.7
C 9 68 4975 9.98 1501 1506 347.7
D 1 52 252395 657.04 1496 1457 381.9
D 2 14 113292 292.82 1496 1457 381.9
D 7 71 46943 119.1 1496 1457 381.9

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