ASTROSAT CZTI

Data Quality Report

Orbit 07795

Creation date: 2024-06-27T15:24:04.896238
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/AS1A02_132T01_9000001072_07795cztM0_level2.evt modeM0/AS1A02_132T01_9000001072_07795cztM0_level2_quad_clean.evt
Size (bytes)626,832,000104,402,880
Size597.8 MB 99.6 MB
Events in quadrant A4,219,925628,941
Events in quadrant B4,470,461636,486
Events in quadrant C4,652,886632,959
Events in quadrant D4,998,377607,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01942
B01942
C01944
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019413226
B019816261
C020696277
D021889308

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9460640.676533%
B9448720.762066%
C94511251.322611%
D94581171.237048%

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 10017 9568 0 0 0.00% 0.00%
B 10017 9564 4 4 0.04% 0.04%
C 10017 9569 79 79 0.79% 0.83%
D 10017 9559 57 57 0.57% 0.60%

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 0 226 10309 41.01 1095 1071 225.3
A 12 194 9499 37.42 1095 1071 225.3
A 13 14 5881 21.35 1095 1071 225.3
B 4 239 60219 278.75 1101 1075 212.2
B 0 214 48887 225.34 1101 1075 212.2
B 4 173 23817 107.19 1101 1075 212.2
C 9 68 294062 1174.48 1065 1070 249.5
C 4 254 162678 647.82 1065 1070 249.5
C 1 16 16851 63.26 1065 1070 249.5
D 2 152 616944 2356.16 1063 1031 261.4
D 13 104 139555 529.92 1063 1031 261.4
D 2 14 108881 412.58 1063 1031 261.4

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