ASTROSAT CZTI

Data Quality Report

Orbit 06689

Creation date: 2024-06-27T15:10:25.866922
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/AS1T01_145T01_9000000916_06689cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06689cztM0_level2_quad_clean.evt
Size (bytes)570,490,560117,728,640
Size544.1 MB 112.3 MB
Events in quadrant A2,940,121803,116
Events in quadrant B3,241,984817,394
Events in quadrant C2,876,769799,359
Events in quadrant D7,763,057677,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136972
B0143171
C0136061
D0277761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714370.551087%
B6714851.266011%
C6714390.580876%
D6714111216.562407%

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 7634 6715 1 1 0.01% 0.01%
B 7634 6715 16 16 0.21% 0.24%
C 7634 6715 0 0 0.00% 0.00%
D 7634 6715 817 817 10.70% 12.17%

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 8 15 54179 351.53 745 730 152.0
A 12 194 7515 44.62 745 730 152.0
A 0 226 7083 41.78 745 730 152.0
B 0 214 75060 517.25 758 739 143.7
B 4 170 52406 359.58 758 739 143.7
B 0 198 35155 239.52 758 739 143.7
C 12 4 12197 68.24 729 729 168.0
C 9 54 9339 51.24 729 729 168.0
C 13 61 5730 29.76 729 729 168.0
D 8 195 2430176 15024.18 660 638 161.7
D 2 33 2228634 13777.85 660 638 161.7
D 2 152 338396 2088.68 660 638 161.7

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