ASTROSAT CZTI

Data Quality Report

Orbit 15499

Creation date: 2024-06-27T17:09:28.298097
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/AS1T02_078T01_9000002294_15499cztM0_level2.evt modeM0/AS1T02_078T01_9000002294_15499cztM0_level2_quad_clean.evt
Size (bytes)473,123,52069,762,240
Size451.2 MB 66.5 MB
Events in quadrant A3,371,215421,110
Events in quadrant B3,448,734425,979
Events in quadrant C3,416,509414,703
Events in quadrant D3,658,551404,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140633
B0142202
C0141552
D0149952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385470.736100%
B6385400.626468%
C6385791.237275%
D63851622.537197%

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 7586 6387 10 10 0.13% 0.16%
B 7586 6387 8 8 0.11% 0.13%
C 7586 6387 0 0 0.00% 0.00%
D 7586 6387 113 113 1.49% 1.77%

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 14 238 172188 1062.72 809 794 161.3
A 0 253 51418 313.89 809 794 161.3
A 14 237 31827 192.42 809 794 161.3
B 10 245 192027 1269.16 810 790 150.7
B 0 189 40748 265.19 810 790 150.7
B 12 111 17254 109.27 810 790 150.7
C 3 233 212532 1190.78 784 791 177.8
C 14 238 123705 691.24 784 791 177.8
C 9 54 12121 63.72 784 791 177.8
D 1 52 224620 1180.31 784 760 189.7
D 7 223 172733 906.74 784 760 189.7
D 13 172 97966 512.52 784 760 189.7

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