ASTROSAT CZTI

Data Quality Report

Orbit 11721

Creation date: 2024-06-27T16:17:23.437652
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/AS1G08_006T01_9000001728_11721cztM0_level2.evt modeM0/AS1G08_006T01_9000001728_11721cztM0_level2_quad_clean.evt
Size (bytes)119,805,12033,678,720
Size114.3 MB 32.1 MB
Events in quadrant A989,909228,541
Events in quadrant B825,850238,308
Events in quadrant C763,192225,966
Events in quadrant D942,889213,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039812
B034091
C031801
D038311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1530191.241830%
B1530120.784314%
C153040.261438%
D1530140.915033%

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 1531 1531 8 8 0.52% 0.52%
B 1531 1531 1 1 0.07% 0.07%
C 1531 1531 0 0 0.00% 0.00%
D 1531 1531 11 11 0.72% 0.72%

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 8 15 179528 4397.92 195 191 40.8
A 1 162 19912 483.62 195 191 40.8
A 14 111 9971 239.84 195 191 40.8
B 10 245 10365 258.08 202 197 39.4
B 3 64 7016 173.08 202 197 39.4
B 4 81 6708 165.26 202 197 39.4
C 13 61 1442 26.75 195 197 46.5
C 3 202 470 5.87 195 197 46.5
C -1 -1 -1 -1.0 195 197 46.5
D 8 195 87736 1886.44 189 184 46.4
D 5 222 53732 1153.77 189 184 46.4
D 4 95 29152 624.16 189 184 46.4

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