ASTROSAT CZTI

Data Quality Report

Orbit 23426

Creation date: 2024-06-27T18:54:18.332026
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_138T02_9000003464_23426cztM0_level2.evt modeM0/AS1A07_138T02_9000003464_23426cztM0_level2_quad_clean.evt
Size (bytes)516,974,400107,942,400
Size493.0 MB 102.9 MB
Events in quadrant A3,437,850700,273
Events in quadrant B3,588,699712,894
Events in quadrant C3,807,400675,370
Events in quadrant D4,317,441662,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152561
B0155361
C0159941
D0180231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7444210.282106%
B7444360.483611%
C7445801.074547%
D74441411.894143%

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 7899 7445 0 0 0.00% 0.00%
B 7899 7444 0 0 0.00% 0.00%
C 7900 7446 0 0 0.00% 0.00%
D 7899 7445 124 124 1.57% 1.67%

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 11205 57.21 890 870 180.6
A 3 137 8004 39.49 890 870 180.6
A 0 226 7724 37.94 890 870 180.6
B 0 189 61701 356.56 889 867 170.6
B 12 111 20815 116.92 889 867 170.6
B 11 111 18228 101.75 889 867 170.6
C 10 9 308108 1532.38 856 860 200.5
C 14 238 136026 674.13 856 860 200.5
C 8 128 8510 38.15 856 860 200.5
D 1 52 821574 3884.21 862 836 211.3
D 12 233 85995 403.02 862 836 211.3
D 13 249 48095 223.66 862 836 211.3

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