ASTROSAT CZTI

Data Quality Report

Orbit 18282

Creation date: 2024-06-27T17:47:49.166692
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_9000002720_18282cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18282cztM0_level2_quad_clean.evt
Size (bytes)589,878,72082,676,160
Size562.6 MB 78.8 MB
Events in quadrant A3,314,163534,353
Events in quadrant B3,694,053532,786
Events in quadrant C3,408,265520,443
Events in quadrant D7,026,675481,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135022
B0147382
C0138692
D0253412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234921.475778%
B62331432.294240%
C62331542.470720%
D62335769.241136%

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 7559 6235 0 0 0.00% 0.00%
B 7558 6234 25 25 0.33% 0.40%
C 7558 6234 4 4 0.05% 0.06%
D 7558 6234 440 440 5.82% 7.06%

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 0 226 7681 39.97 859 846 171.0
A 12 194 6173 31.15 859 846 171.0
A 3 137 5737 28.6 859 846 171.0
B 0 190 144592 895.3 853 834 160.6
B 7 220 116633 721.18 853 834 160.6
B 0 244 42887 261.9 853 834 160.6
C 14 238 126926 669.75 821 829 188.3
C 0 207 56836 297.48 821 829 188.3
C 3 233 17876 90.54 821 829 188.3
D 7 238 2780627 14067.93 817 794 197.6
D 1 52 617818 3122.58 817 794 197.6
D 13 168 480685 2428.59 817 794 197.6

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