ASTROSAT CZTI

Data Quality Report

Orbit 29206

Creation date: 2024-06-27T20:01:32.403205
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/AS1A10_094T71_9000004196_29206cztM0_level2.evt modeM0/AS1A10_094T71_9000004196_29206cztM0_level2_quad_clean.evt
Size (bytes)171,529,92036,008,640
Size163.6 MB 34.3 MB
Events in quadrant A903,147255,909
Events in quadrant B950,827262,686
Events in quadrant C2,122,623218,114
Events in quadrant D1,107,765235,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036971
B038521
C074342
D043711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1593322.008788%
B1593372.322662%
C159250331.595477%
D1592714.459799%

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 2633 1594 0 0 0.00% 0.00%
B 2633 1594 0 0 0.00% 0.00%
C 2632 1593 63 63 2.39% 3.95%
D 2632 1593 14 14 0.53% 0.88%

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 2918 57.13 233 228 47.1
A 3 137 2089 39.53 233 228 47.1
A 0 226 1922 35.98 233 228 47.1
B 5 255 18398 403.9 230 224 45.0
B 0 183 17754 389.59 230 224 45.0
B 12 111 5266 112.05 230 224 45.0
C 3 233 1225036 24828.25 208 210 49.3
C 14 238 51398 1037.62 208 210 49.3
C 14 254 28255 568.5 208 210 49.3
D 1 52 133926 2476.43 226 220 54.0
D 8 195 100177 1851.35 226 220 54.0
D 2 250 15134 276.23 226 220 54.0

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