ASTROSAT CZTI

Data Quality Report

Orbit 46462

Creation date: 2024-06-27T23:23:24.929646
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/AS1A13_037T01_9000006212_46462cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46462cztM0_level2_quad_clean.evt
Size (bytes)434,568,960100,471,680
Size414.4 MB 95.8 MB
Events in quadrant A5,658,041669,060
Events in quadrant B3,228,377690,303
Events in quadrant C2,759,784659,640
Events in quadrant D3,961,718593,109

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206761
B0137561
C0126701
D0160031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61572233.621894%
B61581822.955505%
C6158580.941864%
D61582704.384540%

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 7057 6157 2 2 0.03% 0.03%
B 7058 6158 31 31 0.44% 0.50%
C 7058 6159 4 4 0.06% 0.06%
D 7058 6159 164 164 2.32% 2.66%

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 2870252 19708.2 701 685 145.6
A 0 243 21966 146.16 701 685 145.6
A 15 235 18281 120.85 701 685 145.6
B 10 128 257329 1856.87 696 674 138.2
B 0 245 57727 412.77 696 674 138.2
B 5 32 51869 370.39 696 674 138.2
C 12 2 32948 200.13 684 688 161.2
C 3 233 30839 187.05 684 688 161.2
C 14 254 20207 121.09 684 688 161.2
D 1 52 340040 1981.03 682 660 171.3
D 2 249 316462 1843.4 682 660 171.3
D 8 176 179493 1043.88 682 660 171.3

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