ASTROSAT CZTI

Data Quality Report

Orbit 20210311_A10_094T05_9000004244_level2

Creation date: 2021-03-15T21:26:32.839444
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_094T05_9000004244cztM0_level2_bc.evt modeM0/AS1A10_094T05_9000004244cztM0_level2_quad_clean.evt
Size (bytes)259,292,16061,188,480
Size247.3 MB 58.4 MB
Events in quadrant A758,376424,808
Events in quadrant B792,982435,492
Events in quadrant C855,693413,567
Events in quadrant D5,190,862321,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073840
B075520
C077530
D0220400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3631100.275406%
B3631180.495731%
C3631350.963922%
D3631144939.906362%

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 4566 3632 0 0 0.00% 0.00%
B 4566 3631 0 0 0.00% 0.00%
C 4566 3631 0 0 0.00% 0.00%
D 4566 3631 570 570 12.48% 15.70%

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 6749 148.42 194 190 44.2
A 1 113 3325 70.94 194 190 44.2
A 5 203 1722 34.66 194 190 44.2
B 0 190 23781 568.7 198 192 41.5
B 5 172 3157 71.48 198 192 41.5
B 0 183 2385 52.87 198 192 41.5
C 3 233 104376 2240.79 187 185 46.5
C 7 247 25157 537.06 187 185 46.5
C 2 114 7167 150.16 187 185 46.5
D 8 195 3117401 78555.76 161 155 39.7
D 1 52 1039246 26185.48 161 155 39.7
D 7 80 296696 7472.94 161 155 39.7

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