ASTROSAT CZTI

Data Quality Report

Orbit 21182

Creation date: 2024-06-27T18:24:38.613952
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/AS1A06_002T01_9000003134_21182cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21182cztM0_level2_quad_clean.evt
Size (bytes)219,121,92017,418,240
Size209.0 MB 16.6 MB
Events in quadrant A1,296,03487,764
Events in quadrant B1,265,81389,910
Events in quadrant C1,233,83186,732
Events in quadrant D2,669,03983,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054471
B053001
C052281
D096871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2495742.965932%
B2495973.887776%
C2495933.727455%
D249574729.939880%

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 2855 2496 4 4 0.14% 0.16%
B 2855 2496 4 4 0.14% 0.16%
C 2855 2496 0 0 0.00% 0.00%
D 2855 2496 444 444 15.55% 17.79%

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 5 16 65039 976.58 313 306 66.3
A 13 252 22637 336.89 313 306 66.3
A 13 254 3520 48.49 313 306 66.3
B 4 173 13065 202.12 314 306 63.1
B 3 64 10702 164.69 314 306 63.1
B 12 111 7583 115.28 314 306 63.1
C 14 238 45964 620.15 303 305 73.6
C 3 233 3550 44.07 303 305 73.6
C 13 61 2169 25.32 303 305 73.6
D 7 238 1539475 22340.48 273 264 68.9
D 7 223 29712 427.42 273 264 68.9
D 1 52 21481 307.95 273 264 68.9

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