ASTROSAT CZTI

Data Quality Report

Orbit 02499

Creation date: 2024-06-27T14:18:42.693476
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/AS1T01_046T01_9000000372_02499cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02499cztM0_level2_quad_clean.evt
Size (bytes)817,493,760262,448,640
Size779.6 MB 250.3 MB
Events in quadrant A7,031,6331,712,391
Events in quadrant B7,381,6481,792,538
Events in quadrant C7,135,8391,716,278
Events in quadrant D7,416,5211,573,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033855174
B034421167
C034027172
D035402194

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0251
D0251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16683430.257747%
B16687570.341583%
C16684580.347638%
D166721050.629798%

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 19198 16729 1 1 0.01% 0.01%
B 19198 16722 2 2 0.01% 0.01%
C 19198 16721 1 1 0.01% 0.01%
D 19198 16720 40 40 0.21% 0.24%

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 0 9 21376 52.64 1819 1776 372.3
A 12 194 20263 49.65 1819 1776 372.3
A 0 226 19736 48.24 1819 1776 372.3
B 10 244 121399 340.34 1854 1809 351.4
B 15 186 38262 103.74 1854 1809 351.4
B 14 167 31903 85.64 1854 1809 351.4
C 10 65 36006 82.37 1782 1789 415.4
C 8 112 31251 70.92 1782 1789 415.4
C 5 250 25380 56.79 1782 1789 415.4
D 12 110 232915 557.62 1752 1710 414.6
D 2 184 161541 385.48 1752 1710 414.6
D 11 130 97269 230.47 1752 1710 414.6

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