ASTROSAT CZTI

Data Quality Report

Orbit 29173

Creation date: 2024-06-27T20:01:06.448023
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_099T01_9000004184_29173cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29173cztM0_level2_quad_clean.evt
Size (bytes)556,948,800108,881,280
Size531.1 MB 103.8 MB
Events in quadrant A3,764,410699,402
Events in quadrant B3,954,140712,808
Events in quadrant C3,870,689681,851
Events in quadrant D4,749,346661,480

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161982
B0166802
C0163002
D0195372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77911021.309203%
B77921521.950719%
C77921732.220226%
D77921962.515400%

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 8321 7795 0 0 0.00% 0.00%
B 8322 7796 1 1 0.01% 0.01%
C 8322 7796 0 0 0.00% 0.00%
D 8322 7796 92 92 1.11% 1.18%

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 13771 64.85 975 952 197.7
A 3 137 10232 46.95 975 952 197.7
A 0 226 8227 36.8 975 952 197.7
B 0 183 112755 587.06 969 941 190.5
B 12 111 24093 121.56 969 941 190.5
B 11 111 21747 109.24 969 941 190.5
C 14 238 149142 668.6 937 944 221.7
C 3 233 39348 173.26 937 944 221.7
C 2 114 18422 78.85 937 944 221.7
D 1 52 877091 3881.51 940 915 225.7
D 8 195 183759 810.01 940 915 225.7
D 13 153 46863 203.55 940 915 225.7

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