ASTROSAT CZTI

Data Quality Report

Orbit 09640

Creation date: 2024-06-27T15:48:46.202185
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/AS1A03_077T01_9000001372_09640cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09640cztM0_level2_quad_clean.evt
Size (bytes)177,099,84027,613,440
Size168.9 MB 26.3 MB
Events in quadrant A1,226,432178,523
Events in quadrant B1,257,321173,038
Events in quadrant C1,221,078177,173
Events in quadrant D1,496,544138,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175
B0176
C0176
D0184

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012381
B012377
C012480
D012672

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128447783
B0131718109
C0128477749
D01684510859

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2423331.361948%
B2381371.553969%
C2437251.025851%
D2103341.616738%

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 7540 3113 0 0 0.00% 0.00%
B 7483 3099 0 0 0.00% 0.00%
C 7555 3139 0 0 0.00% 0.00%
D 7514 2860 4 4 0.05% 0.14%

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 0 226 2851 38.74 318 312 65.5
A 12 194 2621 35.23 318 312 65.5
A 13 248 1690 21.02 318 312 65.5
B 0 214 13612 217.2 315 307 61.3
B 0 229 11118 176.49 315 307 61.3
B 12 111 6560 102.08 315 307 61.3
C 13 61 2329 27.54 312 314 73.2
C 14 67 1017 9.61 312 314 73.2
C 3 202 766 6.18 312 314 73.2
D 8 195 347339 5269.33 269 263 65.9
D 1 52 55144 833.21 269 263 65.9
D 13 104 20583 308.5 269 263 65.9

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