ASTROSAT CZTI

Data Quality Report

Orbit 24693

Creation date: 2024-06-27T19:08:50.071125
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/AS1T03_191T01_9000003618_24693cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24693cztM0_level2_quad_clean.evt
Size (bytes)585,642,240149,353,920
Size558.5 MB 142.4 MB
Events in quadrant A3,456,9431,052,085
Events in quadrant B3,496,0331,057,896
Events in quadrant C5,246,857985,471
Events in quadrant D5,096,839975,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144242
B0144751
C0200181
D0196211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499440.677027%
B6500330.507692%
C65001712.630769%
D65002634.046154%

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 7809 6500 0 0 0.00% 0.00%
B 7810 6501 0 0 0.00% 0.00%
C 7810 6500 0 0 0.00% 0.00%
D 7810 6500 244 244 3.12% 3.75%

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 13 254 10402 53.72 895 880 177.2
A 0 226 8024 40.3 895 880 177.2
A 3 137 7059 34.86 895 880 177.2
B 0 190 41323 253.55 872 854 159.6
B 0 189 24257 146.63 872 854 159.6
B 12 111 18388 109.86 872 854 159.6
C 7 247 1791256 9318.62 840 847 192.1
C 14 238 137547 711.49 840 847 192.1
C 2 16 18536 92.07 840 847 192.1
D 1 52 1484324 7207.71 862 838 205.8
D 8 195 284218 1376.84 862 838 205.8
D 12 233 24448 114.71 862 838 205.8

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