ASTROSAT CZTI

Data Quality Report

Orbit 34512

Creation date: 2022-02-15T11:00:12.264406
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/AS1A05_156T01_9000004928_34512cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34512cztM0_level2_quad_clean.evt
Size (bytes)182,658,24030,487,680
Size174.2 MB 29.1 MB
Events in quadrant A1,057,732193,676
Events in quadrant B1,173,068195,951
Events in quadrant C1,318,111192,646
Events in quadrant D1,829,842179,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045831
B049241
C053051
D069861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222430.134892%
B2224311.393885%
C2224431.933453%
D2224823.687050%

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 2224 2224 0 0 0.00% 0.00%
B 2224 2224 19 19 0.85% 0.85%
C 2224 2224 27 27 1.21% 1.21%
D 2224 2224 80 80 3.60% 3.60%

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 10 83 19756 354.98 263 258 54.9
A 9 143 8315 146.69 263 258 54.9
A 13 6 5389 93.42 263 258 54.9
B 5 172 51614 988.43 263 258 52.0
B 0 189 18473 350.58 263 258 52.0
B 0 229 16238 307.56 263 258 52.0
C 0 10 109369 1781.43 259 261 61.2
C 15 214 94695 1541.84 259 261 61.2
C 14 67 92489 1505.82 259 261 61.2
D 12 17 396637 6108.26 256 249 64.9
D 8 195 225494 3470.98 256 249 64.9
D 7 80 53228 816.4 256 249 64.9

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