ASTROSAT CZTI

Data Quality Report

Orbit 03179

Creation date: 2024-06-27T14:25:35.323170
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/AS1G05_127T01_9000000436_03179cztM0_level2.evt modeM0/AS1G05_127T01_9000000436_03179cztM0_level2_quad_clean.evt
Size (bytes)592,208,64087,108,480
Size564.8 MB 83.1 MB
Events in quadrant A3,993,657542,503
Events in quadrant B3,638,982552,818
Events in quadrant C6,208,421541,110
Events in quadrant D3,636,083530,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165623
B0152172
C0231592
D0156312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67562613.863233%
B67561211.791001%
C675671110.523979%
D67561281.894612%

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 7656 6757 154 154 2.01% 2.28%
B 7656 6756 43 43 0.56% 0.64%
C 7656 6756 576 576 7.52% 8.53%
D 7656 6756 79 79 1.03% 1.17%

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 14 249 917237 5666.86 781 764 161.7
A 8 15 30137 181.62 781 764 161.7
A 12 247 16473 97.13 781 764 161.7
B 5 70 201366 1282.8 808 792 156.4
B 4 80 87037 551.59 808 792 156.4
B 2 249 58167 366.95 808 792 156.4
C 1 192 2408941 13691.37 754 760 175.9
C 12 206 643486 3654.13 754 760 175.9
C 14 223 108552 612.84 754 760 175.9
D 13 223 230303 1226.94 768 745 187.1
D 5 233 157485 837.74 768 745 187.1
D 13 120 103180 547.49 768 745 187.1

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
Veto Counter