ASTROSAT CZTI

Data Quality Report

Orbit 18191

Creation date: 2024-06-27T17:46:29.609231
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/AS1A05_160T02_9000002710_18191cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18191cztM0_level2_quad_clean.evt
Size (bytes)494,861,76096,667,200
Size471.9 MB 92.2 MB
Events in quadrant A3,359,316622,344
Events in quadrant B3,388,899631,847
Events in quadrant C3,737,529605,411
Events in quadrant D4,041,170595,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143062
B0142692
C0154602
D0165682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67701181.742984%
B6770901.329394%
C67701872.762186%
D67711181.742726%

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 8815 6772 37 37 0.42% 0.55%
B 8815 6772 16 16 0.18% 0.24%
C 8815 6772 35 35 0.40% 0.52%
D 8816 6773 57 57 0.65% 0.84%

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 154306 912.86 832 813 168.1
A 0 226 7273 38.42 832 813 168.1
A 4 2 6726 35.17 832 813 168.1
B 0 229 76140 474.11 829 809 158.9
B 7 220 40736 251.29 829 809 158.9
B 12 111 18671 112.42 829 809 158.9
C 4 254 529591 2849.65 790 795 185.6
C 14 238 124094 664.45 790 795 185.6
C 13 61 5637 26.09 790 795 185.6
D 5 222 458524 2318.5 805 782 197.4
D 7 238 415534 2100.75 805 782 197.4
D 10 70 46498 231.56 805 782 197.4

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