ASTROSAT CZTI

Data Quality Report

Orbit 35972

Creation date: 2022-07-18T22:49:40.413952
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/AS1A11_050T19_9000005156_35972cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35972cztM0_level2_quad_clean.evt
Size (bytes)188,392,32023,688,000
Size179.7 MB 22.6 MB
Events in quadrant A671,923180,442
Events in quadrant B2,917,813105,063
Events in quadrant C1,088,904168,682
Events in quadrant D939,288167,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027242
B095271
C040411
D036321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125640.318471%
B1256111288.535032%
C12561239.792994%
D1256453.582803%

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 1256 1256 0 0 0.00% 0.00%
B 1256 1256 1008 1008 80.25% 80.25%
C 1256 1256 90 90 7.17% 7.17%
D 1256 1256 30 30 2.39% 2.39%

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 10 83 60406 1819.46 157 154 33.1
A 13 254 1968 54.78 157 154 33.1
A 10 67 1576 42.94 157 154 33.1
B 5 31 1665613 81221.52 98 96 20.5
B 5 15 701808 34220.08 98 96 20.5
B 5 172 58975 2871.33 98 96 20.5
C 9 187 348106 9950.2 146 147 35.0
C 0 10 107955 3082.87 146 147 35.0
C 15 214 54386 1551.01 146 147 35.0
D 8 195 116415 3007.18 153 148 38.7
D 2 250 112062 2894.59 153 148 38.7
D 10 118 57562 1484.98 153 148 38.7

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