ASTROSAT CZTI

Data Quality Report

Orbit 31428

Creation date: 2024-06-27T20:28:19.779920
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_094T31_9000004568_31428cztM0_level2.evt modeM0/AS1A10_094T31_9000004568_31428cztM0_level2_quad_clean.evt
Size (bytes)203,045,76049,968,000
Size193.6 MB 47.7 MB
Events in quadrant A1,225,269337,694
Events in quadrant B1,874,093336,403
Events in quadrant C1,301,306334,498
Events in quadrant D1,578,706326,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051991
B075191
C053371
D062281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2478913.672316%
B24781234.963680%
C24781114.479419%
D2477973.916027%

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 3318 2478 0 0 0.00% 0.00%
B 3318 2479 3 3 0.09% 0.12%
C 3318 2479 0 0 0.00% 0.00%
D 3317 2477 27 27 0.81% 1.09%

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 4602 66.34 316 308 64.7
A 3 137 3339 46.83 316 308 64.7
A 0 226 2783 38.24 316 308 64.7
B 6 159 640509 10499.25 308 300 61.0
B 10 247 8018 126.57 308 300 61.0
B 12 111 7233 113.7 308 300 61.0
C 14 238 51833 698.5 309 309 73.8
C 3 233 29700 398.45 309 309 73.8
C 2 114 5782 74.2 309 309 73.8
D 8 195 162608 1991.0 312 303 81.5
D 12 218 106371 1301.14 312 303 81.5
D 10 203 36604 445.31 312 303 81.5

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