ASTROSAT CZTI

Data Quality Report

Orbit 17951

Creation date: 2024-06-27T17:43:01.695702
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/AS1T03_025T01_9000002670_17951cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17951cztM0_level2_quad_clean.evt
Size (bytes)503,930,880108,115,200
Size480.6 MB 103.1 MB
Events in quadrant A3,334,964707,177
Events in quadrant B3,485,285726,491
Events in quadrant C3,420,508695,516
Events in quadrant D4,541,018653,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148883
B0151652
C0148852
D0185002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7066580.820832%
B70671011.429178%
C70671482.094241%
D70673975.617660%

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 9011 7068 14 14 0.16% 0.20%
B 9012 7069 4 4 0.04% 0.06%
C 9012 7069 10 10 0.11% 0.14%
D 9011 7068 250 250 2.77% 3.54%

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 94385 551.12 842 824 169.8
A 0 226 7272 37.98 842 824 169.8
A 3 137 6485 33.35 842 824 169.8
B 0 197 43961 269.54 853 830 160.0
B 7 220 43634 267.5 853 830 160.0
B 4 48 23115 139.27 853 830 160.0
C 14 238 126943 654.14 823 827 192.8
C 9 160 29405 148.23 823 827 192.8
C 9 176 22859 114.28 823 827 192.8
D 5 222 1118394 5755.29 804 781 194.2
D 2 165 189005 969.28 804 781 194.2
D 13 168 64010 325.61 804 781 194.2

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