ASTROSAT CZTI

Data Quality Report

Orbit 22512

Creation date: 2024-06-27T18:42:10.622878
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/AS1A08_003T01_9000003342_22512cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22512cztM0_level2_quad_clean.evt
Size (bytes)565,125,120105,897,600
Size538.9 MB 101.0 MB
Events in quadrant A3,660,781676,139
Events in quadrant B3,898,123689,642
Events in quadrant C3,726,210668,437
Events in quadrant D5,309,772639,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160231
B0166211
C0160511
D0213771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7668630.821596%
B76671732.256424%
C76671622.112952%
D76673804.956306%

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 7998 7668 0 0 0.00% 0.00%
B 7997 7667 15 15 0.19% 0.20%
C 7997 7667 0 0 0.00% 0.00%
D 7997 7668 308 308 3.85% 4.02%

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 3 1 18559 92.3 945 925 191.1
A 13 254 11932 57.61 945 925 191.1
A 3 137 8310 38.65 945 925 191.1
B 15 33 158739 862.17 941 914 183.1
B 12 111 22301 116.83 941 914 183.1
B 11 111 19653 102.37 941 914 183.1
C 14 238 145116 667.21 911 917 216.1
C 0 10 25179 112.26 911 917 216.1
C 13 61 6395 25.35 911 917 216.1
D 1 52 1780228 8023.06 903 875 221.8
D 13 172 36178 159.18 903 875 221.8
D 2 234 31223 136.84 903 875 221.8

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