ASTROSAT CZTI

Data Quality Report

Orbit 25938

Creation date: 2024-06-27T19:23:03.169997
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_068T01_9000003760_25938cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25938cztM0_level2_quad_clean.evt
Size (bytes)149,866,56022,766,400
Size142.9 MB 21.7 MB
Events in quadrant A2,431,28832,620
Events in quadrant B652,643199,288
Events in quadrant C677,388185,975
Events in quadrant D701,015187,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078610
B027180
C028420
D028960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077
B055
C075
D066

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A935935100.000000%
B108120.185014%
C1085121.105991%
D109160.549954%

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 1170 1007 857 857 73.25% 85.10%
B 1247 1177 0 0 0.00% 0.00%
C 1200 1182 0 0 0.00% 0.00%
D 1221 1174 4 4 0.33% 0.34%

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 13 2267603 227480.59 41 40 10.0
A 12 16 914 87.68 41 40 10.0
A 12 194 412 37.32 41 40 10.0
B 12 111 3573 103.77 166 163 32.9
B 11 111 3282 94.91 166 163 32.9
B 14 111 3101 89.41 166 163 32.9
C 14 238 27211 694.66 161 162 38.9
C 2 16 17065 434.1 161 162 38.9
C 3 233 3752 92.2 161 162 38.9
D 1 52 57679 1381.46 169 165 41.6
D 2 153 5906 137.9 169 165 41.6
D 2 234 3876 89.14 169 165 41.6

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