ASTROSAT CZTI

Data Quality Report

Orbit 12202

Creation date: 2024-06-27T16:23:45.893357
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/AS1A04_066T01_9000001802_12202cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12202cztM0_level2_quad_clean.evt
Size (bytes)625,187,520124,986,240
Size596.2 MB 119.2 MB
Events in quadrant A3,707,767883,608
Events in quadrant B6,612,936787,135
Events in quadrant C3,493,308865,944
Events in quadrant D4,700,222815,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152052
B0239381
C0144461
D0181321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62001522.451613%
B6200137922.241935%
C62001151.854839%
D62004296.919355%

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 7496 6202 25 25 0.33% 0.40%
B 7496 6202 863 863 11.51% 13.91%
C 7496 6202 54 54 0.72% 0.87%
D 7496 6202 301 301 4.02% 4.85%

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 229227 1455.25 779 764 157.0
A 1 162 153191 970.92 779 764 157.0
A 1 178 85664 540.79 779 764 157.0
B 4 239 2986316 23064.29 701 686 129.4
B 10 16 493212 3804.81 701 686 129.4
B 15 204 111147 853.32 701 686 129.4
C 5 112 304088 1803.38 740 745 168.2
C 15 208 267195 1584.05 740 745 168.2
C 4 175 23065 132.69 740 745 168.2
D 2 33 764523 4432.53 732 712 172.3
D 1 52 244063 1412.21 732 712 172.3
D 12 221 200474 1159.25 732 712 172.3

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