ASTROSAT CZTI

Data Quality Report

Orbit 27938

Creation date: 2024-06-27T19:46:12.709808
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_016T01_9000004034_27938cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27938cztM0_level2_quad_clean.evt
Size (bytes)567,328,32074,733,120
Size541.0 MB 71.3 MB
Events in quadrant A3,651,362458,127
Events in quadrant B3,798,439462,246
Events in quadrant C3,871,704441,380
Events in quadrant D5,409,298437,103

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147090
B0152160
C0155690
D0210780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66581462.192851%
B66581432.147792%
C66582193.289276%
D66573515.272645%

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 7798 6658 0 0 0.00% 0.00%
B 7798 6658 0 0 0.00% 0.00%
C 7798 6658 6 6 0.08% 0.09%
D 7797 6657 170 170 2.18% 2.55%

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 15 174 12103 59.72 941 923 187.2
A 13 254 9727 47.03 941 923 187.2
A 3 137 8526 40.61 941 923 187.2
B 10 245 142584 814.3 925 903 174.0
B 12 111 20619 113.31 925 903 174.0
B 11 111 18925 103.58 925 903 174.0
C 14 238 146337 701.26 898 909 207.4
C 6 112 73989 352.39 898 909 207.4
C 3 233 61198 290.72 898 909 207.4
D 1 52 1128203 5228.12 908 886 215.6
D 8 195 571716 2647.32 908 886 215.6
D 2 250 134077 617.7 908 886 215.6

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