ASTROSAT CZTI

Data Quality Report

Orbit 26443

Creation date: 2024-06-27T19:29:04.987690
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_056T01_9000003824_26443cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26443cztM0_level2_quad_clean.evt
Size (bytes)488,977,920117,236,160
Size466.3 MB 111.8 MB
Events in quadrant A3,190,124797,985
Events in quadrant B3,279,520804,547
Events in quadrant C3,954,731760,213
Events in quadrant D3,960,070751,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137120
B0138800
C0158720
D0160450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249340.544087%
B6250641.024000%
C62502493.984000%
D62491482.368379%

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 7469 6250 0 0 0.00% 0.00%
B 7470 6251 1 1 0.01% 0.02%
C 7470 6250 90 90 1.20% 1.44%
D 7469 6250 67 67 0.90% 1.07%

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 13 254 9335 52.5 825 808 162.4
A 12 189 7724 42.58 825 808 162.4
A 0 226 7333 40.18 825 808 162.4
B 0 190 90344 591.61 814 798 151.4
B 12 111 17580 110.87 814 798 151.4
B 11 111 15681 98.33 814 798 151.4
C 4 254 705478 3880.5 783 790 181.6
C 14 238 126710 693.4 783 790 181.6
C 3 233 67070 364.98 783 790 181.6
D 1 52 359673 1893.59 798 779 189.5
D 7 80 261045 1373.21 798 779 189.5
D 11 176 177542 932.63 798 779 189.5

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