ASTROSAT CZTI

Data Quality Report

Orbit 35647

Creation date: 2022-05-02T18:30:14.563366
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_106T01_9000005102_35647cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35647cztM0_level2_quad_clean.evt
Size (bytes)1,507,861,440117,155,520
Size1.4 GB 111.7 MB
Events in quadrant A26,845,592403,461
Events in quadrant B5,957,038811,220
Events in quadrant C6,505,826806,444
Events in quadrant D5,622,791769,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870054
B0246243
C0255763
D0240473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108941088899.944924%
B108942602.386635%
C108942692.469249%
D108941591.459519%

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 15191 10897 10600 10600 69.78% 97.27%
B 15191 10896 172 172 1.13% 1.58%
C 15191 10897 205 205 1.35% 1.88%
D 15191 10897 115 115 0.76% 1.06%

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 23812326 157891.62 746 731 150.8
A 10 83 139059 917.24 746 731 150.8
A 13 6 7759 46.6 746 731 150.8
B 5 172 938683 3886.22 1251 1218 241.2
B 0 197 38895 156.19 1251 1218 241.2
B 0 189 33154 132.39 1251 1218 241.2
C 0 10 808955 2811.31 1231 1239 287.3
C 15 214 448636 1557.2 1231 1239 287.3
C 4 254 249964 865.7 1231 1239 287.3
D 13 249 389227 1294.47 1233 1200 299.8
D 2 249 176404 584.49 1233 1200 299.8
D 2 153 120423 397.73 1233 1200 299.8

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