ASTROSAT CZTI

Data Quality Report

Orbit 25764

Creation date: 2024-06-27T19:21:14.184020
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/AS1A09_147T01_9000003754_25764cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25764cztM0_level2_quad_clean.evt
Size (bytes)438,776,64093,038,400
Size418.5 MB 88.7 MB
Events in quadrant A3,052,837618,289
Events in quadrant B3,142,536629,862
Events in quadrant C3,173,034588,983
Events in quadrant D3,532,082581,136

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126400
B0129630
C0129350
D0141030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5706510.893796%
B5707731.279131%
C5707911.594533%
D5706931.629863%

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 7046 5706 0 0 0.00% 0.00%
B 7047 5707 1 1 0.01% 0.02%
C 7047 5707 2 2 0.03% 0.04%
D 7046 5707 64 64 0.91% 1.12%

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 9298 54.05 792 779 157.6
A 0 226 6804 38.22 792 779 157.6
A 3 137 6646 37.22 792 779 157.6
B 12 111 16402 107.58 791 777 145.2
B 11 111 14736 96.11 791 777 145.2
B 4 171 13739 89.24 791 777 145.2
C 14 238 122561 710.48 751 759 171.4
C 3 233 121383 703.61 751 759 171.4
C 13 61 5223 26.04 751 759 171.4
D 8 195 333954 1852.62 751 735 179.9
D 1 52 155711 861.63 751 735 179.9
D 13 104 86808 478.55 751 735 179.9

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