ASTROSAT CZTI

Data Quality Report

Orbit 38798

Creation date: 2024-06-27T21:56:33.385550
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_9000005396_38798cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38798cztM0_level2_quad_clean.evt
Size (bytes)345,150,72086,855,040
Size329.2 MB 82.8 MB
Events in quadrant A2,692,303584,807
Events in quadrant B2,659,766600,792
Events in quadrant C2,520,613577,792
Events in quadrant D4,495,642499,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111272
B0113811
C0106881
D0168101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5240140.267176%
B5240761.450382%
C5240100.190840%
D52403576.812977%

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 9126 5242 5 5 0.05% 0.10%
B 9126 5242 61 61 0.67% 1.16%
C 9126 5242 3 3 0.03% 0.06%
D 9126 5242 363 363 3.98% 6.92%

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 405804 3432.05 580 569 118.1
A 13 248 12835 103.88 580 569 118.1
A 7 16 10936 87.8 580 569 118.1
B 4 171 179461 1603.02 576 561 111.6
B 5 200 99926 890.36 576 561 111.6
B 0 230 41794 369.47 576 561 111.6
C 15 214 234581 1773.99 568 571 131.9
C 0 10 46237 346.19 568 571 131.9
C 15 208 9984 71.36 568 571 131.9
D 13 249 567264 4172.79 553 537 135.8
D 12 235 438041 3221.33 553 537 135.8
D 12 233 366011 2690.97 553 537 135.8

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