ASTROSAT CZTI

Data Quality Report

Orbit 22166

Creation date: 2024-06-27T18:37:42.004177
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/AS1T03_145T01_9000003278_22166cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22166cztM0_level2_quad_clean.evt
Size (bytes)516,254,400102,856,320
Size492.3 MB 98.1 MB
Events in quadrant A3,489,114666,918
Events in quadrant B3,541,829674,790
Events in quadrant C3,500,197643,592
Events in quadrant D4,602,938616,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153042
B0153213
C0152912
D0186382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7379590.799566%
B73781001.355381%
C7379811.097710%
D73793214.350183%

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 8039 7381 0 0 0.00% 0.00%
B 8038 7380 0 0 0.00% 0.00%
C 8039 7381 0 0 0.00% 0.00%
D 8039 7381 247 247 3.07% 3.35%

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 13 254 12512 63.67 902 883 182.7
A 3 1 10619 53.3 902 883 182.7
A 3 137 8217 40.15 902 883 182.7
B 12 111 21670 120.1 898 872 173.2
B 11 111 19451 107.28 898 872 173.2
B 14 111 16877 92.42 898 872 173.2
C 14 238 134443 658.72 858 863 202.8
C 8 128 10929 49.64 858 863 202.8
C 13 61 5963 25.15 858 863 202.8
D 1 52 1090892 5221.9 856 830 208.7
D 2 136 115633 549.96 856 830 208.7
D 13 104 41340 194.06 856 830 208.7

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