ASTROSAT CZTI

Data Quality Report

Orbit 38862

Creation date: 2024-06-27T21:57:23.345212
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_077T06_9000005408_38862cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38862cztM0_level2_quad_clean.evt
Size (bytes)348,580,80097,274,880
Size332.4 MB 92.8 MB
Events in quadrant A3,115,354656,559
Events in quadrant B2,903,222667,154
Events in quadrant C2,794,537632,751
Events in quadrant D3,642,014586,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129033
B0123882
C0117802
D0146802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5758280.486280%
B5758500.868357%
C575860.104203%
D5758671.163598%

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 7371 5759 10 10 0.14% 0.17%
B 7371 5759 30 30 0.41% 0.52%
C 7371 5759 2 2 0.03% 0.03%
D 7371 5759 46 46 0.62% 0.80%

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 432069 3197.82 659 646 134.9
A 13 248 120441 887.95 659 646 134.9
A 9 143 13315 93.91 659 646 134.9
B 5 200 110594 858.14 652 634 128.1
B 4 171 80198 620.93 652 634 128.1
B 5 172 71901 556.18 652 634 128.1
C 15 214 237640 1560.87 643 645 151.8
C 14 254 20169 128.59 643 645 151.8
C 0 10 16878 106.91 643 645 151.8
D 12 235 530191 3360.48 643 624 157.6
D 2 249 125873 794.79 643 624 157.6
D 2 250 122748 774.96 643 624 157.6

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