ASTROSAT CZTI

Data Quality Report

Orbit 26408

Creation date: 2024-06-27T19:28:39.835562
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/AS1A09_127T02_9000003818_26408cztM0_level2.evt modeM0/AS1A09_127T02_9000003818_26408cztM0_level2_quad_clean.evt
Size (bytes)205,770,24030,277,440
Size196.2 MB 28.9 MB
Events in quadrant A1,429,032177,249
Events in quadrant B1,464,857183,845
Events in quadrant C1,580,042174,739
Events in quadrant D1,557,577172,371

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060630
B060780
C064270
D065060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2917963.291052%
B29171063.633870%
C29161244.252401%
D2916953.257888%

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 3282 2918 0 0 0.00% 0.00%
B 3282 2918 0 0 0.00% 0.00%
C 3281 2917 5 5 0.15% 0.17%
D 3281 2917 7 7 0.21% 0.24%

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 0 13 6012 73.47 368 360 76.9
A 13 254 4302 51.24 368 360 76.9
A 3 137 3637 42.59 368 360 76.9
B 12 111 9215 119.95 369 359 73.8
B 11 111 8152 105.56 369 359 73.8
B 14 111 7319 94.27 369 359 73.8
C 3 233 77030 901.64 355 356 85.0
C 14 238 56816 663.94 355 356 85.0
C 2 16 49095 573.14 355 356 85.0
D 1 52 110397 1262.74 357 347 87.2
D 12 233 51909 591.64 357 347 87.2
D 7 223 23341 263.84 357 347 87.2

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