ASTROSAT CZTI

Data Quality Report

Orbit 33909

Creation date: 2024-06-27T20:54:01.418379
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/AS1T04_090T01_9000004840_33909cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33909cztM0_level2_quad_clean.evt
Size (bytes)4,348,8001,370,880
Size4.1 MB 1.3 MB
Events in quadrant A27,6877,562
Events in quadrant B29,1756,654
Events in quadrant C36,9619,060
Events in quadrant D29,8994,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114032521478839246
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057325604
B063286207
C057965644
D080877971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05755
B05553
C05852
D05959

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6200.000000%
B5400.000000%
C7511.333333%
D4100.000000%

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 1099 115 0 0 0.00% 0.00%
B 1011 99 0 0 0.00% 0.00%
C 1120 136 0 0 0.00% 0.00%
D 1131 78 0 0 0.00% 0.00%

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 15 169 1194 412.3 6 6 2.9
A 13 254 118 38.87 6 6 2.9
A 13 6 100 32.62 6 6 2.9
B 5 172 5050 1904.54 5 5 2.6
B 0 190 305 113.25 5 5 2.6
B 15 35 187 68.71 5 5 2.6
C 15 214 3028 889.45 8 8 3.4
C 3 9 712 207.34 8 8 3.4
C 3 233 382 110.15 8 8 3.4
D 1 52 5221 2271.69 4 4 2.3
D 8 195 3288 1429.98 4 4 2.3
D 10 118 2935 1276.27 4 4 2.3

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