ASTROSAT CZTI

Data Quality Report

Orbit 31933

Creation date: 2024-06-27T20:34:21.036520
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_059T01_9000004656_31933cztM0_level2.evt modeM0/AS1A10_059T01_9000004656_31933cztM0_level2_quad_clean.evt
Size (bytes)3,119,909,760430,790,400
Size2.9 GB 410.8 MB
Events in quadrant A15,029,0022,960,000
Events in quadrant B22,653,5712,919,906
Events in quadrant C23,824,5112,802,294
Events in quadrant D31,184,5402,519,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0612756
B0860916
C0901506
D01114616

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05460
C05460
D05460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268284621.722081%
B268289053.373341%
C2682821367.961831%
D26828420715.681378%

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 32984 26830 90 90 0.27% 0.34%
B 32984 26831 216 216 0.65% 0.81%
C 32984 26831 613 613 1.86% 2.28%
D 32984 26832 4103 4103 12.44% 15.29%

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 12 96 972186 1363.92 3631 3570 710.2
A 13 254 51546 67.55 3631 3570 710.2
A 13 6 38398 49.04 3631 3570 710.2
B 6 159 7063277 10840.39 3549 3468 651.3
B 4 80 957096 1464.3 3549 3468 651.3
B 5 172 410444 624.91 3549 3468 651.3
C 3 233 8310229 10835.91 3388 3416 766.6
C 0 10 1464417 1905.82 3388 3416 766.6
C 14 238 574705 745.22 3388 3416 766.6
D 12 33 9252873 11942.84 3318 3243 774.5
D 8 195 4173098 5383.99 3318 3243 774.5
D 13 249 3408347 4396.57 3318 3243 774.5

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