ASTROSAT CZTI

Data Quality Report

Orbit 35162

Creation date: 2022-03-30T22:27:21.248493
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/AS1C07_004T01_9000005042_35162cztM0_level2.evt modeM0/AS1C07_004T01_9000005042_35162cztM0_level2_quad_clean.evt
Size (bytes)135,558,72018,411,840
Size129.3 MB 17.6 MB
Events in quadrant A600,219134,277
Events in quadrant B907,954126,441
Events in quadrant C637,549133,023
Events in quadrant D1,893,22890,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023662
B033121
C024211
D062881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A935252.673797%
B93514115.080214%
C935545.775401%
D93561866.096257%

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 935 935 21 21 2.25% 2.25%
B 935 935 87 87 9.30% 9.30%
C 935 935 39 39 4.17% 4.17%
D 935 935 528 528 56.47% 56.47%

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 87758 3357.77 119 117 26.1
A 10 83 36592 1397.46 119 117 26.1
A 9 143 11408 432.59 119 117 26.1
B 5 236 430200 18964.28 108 106 22.7
B 5 172 49486 2177.33 108 106 22.7
B 12 111 2347 98.81 108 106 22.7
C 0 10 155348 5724.2 110 111 27.1
C 15 214 41884 1540.33 110 111 27.1
C 0 207 8744 318.33 110 111 27.1
D 5 223 1160438 49773.08 86 84 23.3
D 8 195 198320 8503.28 86 84 23.3
D 13 249 112664 4829.09 86 84 23.3

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