ASTROSAT CZTI

Data Quality Report

Orbit 34644

Creation date: 2022-02-23T23:33:03.885431
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/AS1T05_008T01_9000004956_34644cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34644cztM0_level2_quad_clean.evt
Size (bytes)532,195,20080,265,600
Size507.5 MB 76.5 MB
Events in quadrant A2,743,384515,399
Events in quadrant B3,658,068509,959
Events in quadrant C3,068,892512,251
Events in quadrant D6,249,774482,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120383
B0146222
C0125772
D0226822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5871100.170329%
B58712434.138988%
C5871671.141203%
D58711783.031851%

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 8826 5873 2 2 0.02% 0.03%
B 8826 5873 163 163 1.85% 2.78%
C 8826 5873 45 45 0.51% 0.77%
D 8826 5873 66 66 0.75% 1.12%

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 50544 360.63 683 671 138.3
A 7 16 21489 150.53 683 671 138.3
A 13 6 15207 105.11 683 671 138.3
B 5 172 863615 6729.66 669 652 128.2
B 4 81 37294 285.75 669 652 128.2
B 0 190 34496 263.93 669 652 128.2
C 15 214 246554 1603.17 658 660 153.4
C 0 10 174075 1130.62 658 660 153.4
C 14 67 34047 217.67 658 660 153.4
D 8 195 2578712 14882.1 655 639 173.2
D 10 203 549766 3169.87 655 639 173.2
D 2 120 102184 586.18 655 639 173.2

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