ASTROSAT CZTI

Data Quality Report

Orbit 23881

Creation date: 2024-06-27T18:59:43.299738
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_142T01_9000003540_23881cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23881cztM0_level2_quad_clean.evt
Size (bytes)501,275,52087,566,400
Size478.1 MB 83.5 MB
Events in quadrant A3,558,869563,220
Events in quadrant B3,731,232567,287
Events in quadrant C3,547,426529,117
Events in quadrant D3,892,252528,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148032
B0152852
C0146682
D0158192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6647851.278772%
B66481211.820096%
C66481502.256318%
D66481211.820096%

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 7847 6648 0 0 0.00% 0.00%
B 7848 6649 16 16 0.20% 0.24%
C 7848 6649 6 6 0.08% 0.09%
D 7848 6649 53 53 0.68% 0.80%

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 11167 56.11 923 908 182.8
A 0 226 8053 39.08 923 908 182.8
A 3 137 7441 35.73 923 908 182.8
B 0 189 68214 397.45 904 884 169.4
B 5 172 34252 196.97 904 884 169.4
B 4 216 25932 147.86 904 884 169.4
C 14 238 140813 706.26 862 870 198.1
C 0 10 42917 212.2 862 870 198.1
C 13 61 5943 25.6 862 870 198.1
D 1 52 210491 969.14 893 870 216.3
D 12 233 167557 770.64 893 870 216.3
D 8 195 120857 554.73 893 870 216.3

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