ASTROSAT CZTI

Data Quality Report

Orbit 22181

Creation date: 2024-06-27T18:38:07.150661
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/AS1A07_134T02_9000003282_22181cztM0_level2.evt modeM0/AS1A07_134T02_9000003282_22181cztM0_level2_quad_clean.evt
Size (bytes)597,337,92087,312,960
Size569.7 MB 83.3 MB
Events in quadrant A3,859,262535,447
Events in quadrant B4,005,597536,387
Events in quadrant C3,869,762513,197
Events in quadrant D5,814,934504,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165312
B0169232
C0165073
D0227782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79731071.342029%
B79741471.843491%
C79731722.157281%
D79733544.439985%

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 8758 7975 0 0 0.00% 0.00%
B 8759 7976 2 2 0.02% 0.03%
C 8758 7975 0 0 0.00% 0.00%
D 8758 7975 221 221 2.52% 2.77%

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 15444 71.73 999 978 201.7
A 3 137 9007 39.81 999 978 201.7
A 0 226 8631 37.95 999 978 201.7
B 0 245 59701 305.4 990 965 192.3
B 5 235 34468 174.2 990 965 192.3
B 0 190 24503 122.39 990 965 192.3
C 14 238 149695 663.32 953 961 224.2
C 13 61 6517 24.78 953 961 224.2
C 4 175 2836 8.36 953 961 224.2
D 1 52 2011847 8657.11 956 928 232.3
D 13 172 46182 194.82 956 928 232.3
D 7 38 45380 191.37 956 928 232.3

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