ASTROSAT CZTI

Data Quality Report

Orbit 26518

Creation date: 2024-06-27T19:29:58.566774
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/AS1C05_019T04_9000003838_26518cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26518cztM0_level2_quad_clean.evt
Size (bytes)719,173,440110,502,720
Size685.9 MB 105.4 MB
Events in quadrant A2,999,397807,400
Events in quadrant B3,585,122813,418
Events in quadrant C3,225,175796,390
Events in quadrant D11,573,007517,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125660
B0146600
C0133370
D0384100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5884460.781781%
B5883601.019888%
C5883881.495835%
D5884348659.245411%

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 7279 5885 0 0 0.00% 0.00%
B 7278 5884 7 7 0.10% 0.12%
C 7278 5883 2 2 0.03% 0.03%
D 7279 5884 3355 3355 46.09% 57.02%

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 10999 67.03 776 761 152.7
A 0 226 6683 38.77 776 761 152.7
A 3 137 6075 34.79 776 761 152.7
B 0 189 354089 2510.16 773 756 140.8
B 3 112 94078 662.98 773 756 140.8
B 5 172 36637 254.91 773 756 140.8
C 14 238 121802 692.52 763 770 174.8
C 3 233 100914 573.0 763 770 174.8
C 0 207 13353 72.0 763 770 174.8
D 1 52 4826815 37736.45 521 510 127.9
D 7 80 4511382 35270.11 521 510 127.9
D 12 233 143073 1114.68 521 510 127.9

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