ASTROSAT CZTI

Data Quality Report

Orbit 25822

Creation date: 2024-06-27T19:21:48.666336
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_068T01_9000003756_25822cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25822cztM0_level2_quad_clean.evt
Size (bytes)602,190,720101,514,240
Size574.3 MB 96.8 MB
Events in quadrant A3,359,387709,969
Events in quadrant B3,648,861704,978
Events in quadrant C3,311,776651,421
Events in quadrant D7,491,429568,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140040
B0150020
C0138140
D0262880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287641.017974%
B6287851.351996%
C62871031.638301%
D6287160925.592492%

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 7606 6286 0 0 0.00% 0.00%
B 7606 6287 9 9 0.12% 0.14%
C 7606 6286 1 1 0.01% 0.02%
D 7606 6286 1579 1579 20.76% 25.12%

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 9051 47.26 870 857 173.4
A 0 226 7726 39.62 870 857 173.4
A 3 137 7350 37.45 870 857 173.4
B 15 33 233039 1456.1 849 830 159.5
B 0 219 42815 263.27 849 830 159.5
B 0 190 31166 190.23 849 830 159.5
C 14 238 129918 699.22 802 808 184.6
C 3 233 29200 153.76 802 808 184.6
C 4 175 17857 92.33 802 808 184.6
D 7 223 3355017 19970.32 702 687 168.0
D 7 80 638222 3795.62 702 687 168.0
D 12 233 627734 3733.18 702 687 168.0

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