ASTROSAT CZTI

Data Quality Report

Orbit 25171

Creation date: 2024-06-27T19:14:33.424732
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/AS1A07_018T02_9000003684_25171cztM0_level2.evt modeM0/AS1A07_018T02_9000003684_25171cztM0_level2_quad_clean.evt
Size (bytes)511,917,12082,762,560
Size488.2 MB 78.9 MB
Events in quadrant A3,507,277527,013
Events in quadrant B3,577,957533,065
Events in quadrant C3,991,781509,049
Events in quadrant D4,005,455503,551

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145550
B0147260
C0162280
D0162610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6213731.174956%
B6212921.481005%
C62121862.994205%
D62121231.980039%

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 7533 6213 0 0 0.00% 0.00%
B 7532 6212 3 3 0.04% 0.05%
C 7532 6212 2 2 0.03% 0.03%
D 7532 6212 43 43 0.57% 0.69%

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 13 254 10806 55.31 910 896 179.2
A 0 226 7779 38.42 910 896 179.2
A 3 137 7650 37.7 910 896 179.2
B 0 190 30745 177.66 904 884 168.1
B 12 111 19572 111.18 904 884 168.1
B 11 111 17426 98.42 904 884 168.1
C 7 247 333923 1655.27 880 892 201.2
C 14 238 143875 710.67 880 892 201.2
C 7 87 47726 232.78 880 892 201.2
D 1 52 267109 1250.68 894 870 212.9
D 12 233 160015 747.6 894 870 212.9
D 8 195 149881 699.99 894 870 212.9

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