ASTROSAT CZTI

Data Quality Report

Orbit 28724

Creation date: 2024-06-27T19:55:26.484357
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/AS1A10_123T06_9000004122_28724cztM0_level2.evt modeM0/AS1A10_123T06_9000004122_28724cztM0_level2_quad_clean.evt
Size (bytes)653,371,20098,726,400
Size623.1 MB 94.2 MB
Events in quadrant A3,770,588626,415
Events in quadrant B3,899,018629,609
Events in quadrant C5,581,549598,969
Events in quadrant D6,007,667591,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163122
B0166902
C0218882
D0232342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78131612.060668%
B78132342.995008%
C78135286.757967%
D78134495.746832%

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 8278 7815 2 2 0.02% 0.03%
B 8278 7813 27 27 0.33% 0.35%
C 8278 7813 31 31 0.37% 0.40%
D 8278 7813 286 286 3.45% 3.66%

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 14 239 33572 166.78 965 943 195.6
A 13 254 14407 68.82 965 943 195.6
A 3 137 9497 43.72 965 943 195.6
B 5 172 77396 418.35 951 924 182.8
B 0 229 35428 188.76 951 924 182.8
B 12 111 22203 116.41 951 924 182.8
C 3 233 1862648 8676.93 913 914 214.6
C 14 238 147515 683.26 913 914 214.6
C 4 224 9620 40.58 913 914 214.6
D 1 52 1211997 5422.47 927 902 223.3
D 8 195 724272 3238.77 927 902 223.3
D 12 233 381805 1705.43 927 902 223.3

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