ASTROSAT CZTI

Data Quality Report

Orbit 23842

Creation date: 2024-06-27T18:59:17.011640
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/AS1A07_027T03_9000003528_23842cztM0_level2.evt modeM0/AS1A07_027T03_9000003528_23842cztM0_level2_quad_clean.evt
Size (bytes)572,031,36088,341,120
Size545.5 MB 84.2 MB
Events in quadrant A3,067,557580,171
Events in quadrant B3,177,782591,262
Events in quadrant C3,680,552560,284
Events in quadrant D6,963,268495,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131422
B0134212
C0149532
D0252662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421210.327052%
B6421400.622956%
C64211402.180346%
D642177212.023049%

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 7456 6422 0 0 0.00% 0.00%
B 7456 6422 4 4 0.05% 0.06%
C 7456 6422 39 39 0.52% 0.61%
D 7456 6422 470 470 6.30% 7.32%

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 11903 69.91 791 776 159.2
A 2 250 10426 60.63 791 776 159.2
A 3 137 6837 38.08 791 776 159.2
B 6 36 22971 147.99 792 773 150.0
B 5 172 18758 119.9 792 773 150.0
B 12 111 17667 112.63 792 773 150.0
C 0 10 560040 3215.44 753 757 173.9
C 14 238 120807 690.19 753 757 173.9
C 0 239 54744 310.38 753 757 173.9
D 8 195 2060423 11675.11 720 697 176.4
D 1 52 2041826 11569.7 720 697 176.4
D 12 233 63014 353.23 720 697 176.4

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