ASTROSAT CZTI

Data Quality Report

Orbit 23973

Creation date: 2024-06-27T19:00:39.968434
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/AS1A07_001T04_9000003552_23973cztM0_level2.evt modeM0/AS1A07_001T04_9000003552_23973cztM0_level2_quad_clean.evt
Size (bytes)222,094,08037,278,720
Size211.8 MB 35.6 MB
Events in quadrant A948,212277,106
Events in quadrant B1,317,856273,910
Events in quadrant C998,183261,647
Events in quadrant D3,320,698166,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041831
B053281
C043611
D0112751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205050.243902%
B2050743.609756%
C2050361.756098%
D2050102950.195122%

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 2050 2050 0 0 0.00% 0.00%
B 2050 2050 53 53 2.59% 2.59%
C 2050 2050 14 14 0.68% 0.68%
D 2050 2050 739 739 36.05% 36.05%

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 4021 73.94 245 240 51.1
A 0 226 2322 40.71 245 240 51.1
A 3 137 1932 33.09 245 240 51.1
B 4 200 232380 4926.88 240 234 47.1
B 0 197 96337 2039.61 240 234 47.1
B 0 245 25087 527.46 240 234 47.1
C 0 10 70808 1344.86 222 223 52.5
C 14 238 36457 690.37 222 223 52.5
C 7 221 7782 144.02 222 223 52.5
D 12 218 2446335 60591.81 155 150 40.4
D 12 250 97248 2405.11 155 150 40.4
D 7 238 58384 1442.45 155 150 40.4

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