ASTROSAT CZTI

Data Quality Report

Orbit 29760

Creation date: 2024-06-27T20:07:30.869572
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/AS1T03_291T01_9000004278_29760cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29760cztM0_level2_quad_clean.evt
Size (bytes)571,737,60084,888,000
Size545.3 MB 81.0 MB
Events in quadrant A3,433,081560,093
Events in quadrant B5,688,550554,996
Events in quadrant C3,518,345519,018
Events in quadrant D4,259,422507,239

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141372
B0210412
C0142952
D0168492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151821.333117%
B61512744.454560%
C61511422.308568%
D61511412.292310%

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 7466 6151 0 0 0.00% 0.00%
B 7466 6151 49 49 0.66% 0.80%
C 7466 6151 3 3 0.04% 0.05%
D 7466 6152 83 83 1.11% 1.35%

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 12529 66.79 889 876 174.5
A 3 137 7686 39.03 889 876 174.5
A 0 226 7473 37.81 889 876 174.5
B 6 159 1882625 11777.47 876 858 159.8
B 0 229 354528 2213.53 876 858 159.8
B 12 111 18199 108.53 876 858 159.8
C 14 238 139541 736.96 827 835 188.2
C 3 233 95768 504.39 827 835 188.2
C 7 247 28538 147.19 827 835 188.2
D 8 195 667670 3469.06 830 812 192.2
D 7 80 81328 418.85 830 812 192.2
D 13 104 76232 392.34 830 812 192.2

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