ASTROSAT CZTI

Data Quality Report

Orbit 04447

Creation date: 2024-06-27T14:42:10.962798
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/AS1G05_253T01_9000000560_04447cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04447cztM0_level2_quad_clean.evt
Size (bytes)289,987,20049,417,920
Size276.6 MB 47.1 MB
Events in quadrant A2,152,592293,987
Events in quadrant B2,098,205292,241
Events in quadrant C2,119,735303,076
Events in quadrant D2,100,531287,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013638
B013737
C013842
D013742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143074822
B0138754542
C0139844369
D0146425063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45111322.926180%
B44971393.090950%
C45731092.383556%
D44831202.676779%

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 7115 5148 0 0 0.00% 0.00%
B 7113 5167 1 1 0.01% 0.02%
C 7116 5220 16 16 0.22% 0.31%
D 7111 5148 8 8 0.11% 0.16%

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 15 47 42288 376.46 530 516 111.0
A 8 15 32727 290.29 530 516 111.0
A 0 118 20041 175.96 530 516 111.0
B 15 204 16456 152.95 532 518 104.2
B 15 54 15465 143.44 532 518 104.2
B 12 111 9335 84.61 532 518 104.2
C 14 48 50458 409.26 522 524 122.0
C 9 247 14738 116.5 522 524 122.0
C 9 16 13980 110.29 522 524 122.0
D 4 95 51473 413.11 513 498 123.4
D 2 14 37623 300.86 513 498 123.4
D 13 239 27161 216.08 513 498 123.4

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