ASTROSAT CZTI

Data Quality Report

Orbit 39306

Creation date: 2024-06-27T22:03:00.111944
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/AS1A12_044T04_9000005464_39306cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39306cztM0_level2_quad_clean.evt
Size (bytes)315,858,24039,994,560
Size301.2 MB 38.1 MB
Events in quadrant A1,530,000322,677
Events in quadrant B1,463,171325,724
Events in quadrant C1,331,782313,431
Events in quadrant D7,137,37740,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063400
B064530
C060200
D0232610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A292480.273598%
B2924210.718194%
C292420.068399%
D2924254887.140903%

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 2924 2924 9 9 0.31% 0.31%
B 2924 2924 16 16 0.55% 0.55%
C 2924 2924 1 1 0.03% 0.03%
D 2924 2924 2148 2148 73.46% 73.46%

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 218403 3385.43 309 303 64.4
A 13 248 108527 1679.89 309 303 64.4
A 2 79 7403 110.21 309 303 64.4
B 0 183 103328 1715.37 306 298 60.1
B 0 186 55495 918.99 306 298 60.1
B 5 255 44415 734.52 306 298 60.1
C 15 214 131463 1912.21 292 294 68.6
C 3 233 39391 569.96 292 294 68.6
C 14 254 18996 272.64 292 294 68.6
D 12 235 6414957 182130.25 136 132 35.2
D 12 218 48759 1380.62 136 132 35.2
D 2 249 44831 1269.1 136 132 35.2

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