ASTROSAT CZTI

Data Quality Report

Orbit 18076

Creation date: 2024-06-27T17:44:44.624234
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/AS1A06_006T01_9000002684_18076cztM0_level2.evt modeM0/AS1A06_006T01_9000002684_18076cztM0_level2_quad_clean.evt
Size (bytes)607,561,92090,161,280
Size579.4 MB 86.0 MB
Events in quadrant A4,997,627570,483
Events in quadrant B3,694,471592,675
Events in quadrant C3,362,766573,867
Events in quadrant D5,909,726544,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193942
B0151062
C0141812
D0220144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A642594914.770428%
B64251492.319066%
C64251111.727626%
D64244897.612080%

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 7620 6426 4 4 0.05% 0.06%
B 7620 6426 38 38 0.50% 0.59%
C 7620 6426 0 0 0.00% 0.00%
D 7619 6425 362 362 4.75% 5.63%

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 14 111 1735806 10400.24 839 825 166.8
A 15 174 37553 220.16 839 825 166.8
A 0 226 7342 39.07 839 825 166.8
B 3 64 278107 1762.25 847 830 157.3
B 7 220 45949 286.76 847 830 157.3
B 0 229 22808 139.68 847 830 157.3
C 14 238 129844 689.8 814 821 187.0
C 9 160 22981 118.48 814 821 187.0
C 9 176 17453 88.92 814 821 187.0
D 5 222 1165567 5888.68 814 792 197.8
D 7 238 916626 4630.12 814 792 197.8
D 11 176 462904 2336.27 814 792 197.8

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