ASTROSAT CZTI

Data Quality Report

Orbit 14172

Creation date: 2024-06-27T16:51:38.674283
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/AS1G08_024T02_9000002094_14172cztM0_level2.evt modeM0/AS1G08_024T02_9000002094_14172cztM0_level2_quad_clean.evt
Size (bytes)487,658,88091,609,920
Size465.1 MB 87.4 MB
Events in quadrant A3,371,954565,771
Events in quadrant B3,564,535574,610
Events in quadrant C3,516,068598,708
Events in quadrant D3,868,834575,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139763
B0145422
C0140702
D0156052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65941311.986655%
B65942113.199879%
C65941231.865332%
D65941271.925993%

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 8945 6599 0 0 0.00% 0.00%
B 8945 6599 31 31 0.35% 0.47%
C 8945 6599 1 1 0.01% 0.02%
D 8945 6599 2 2 0.02% 0.03%

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 8 15 42244 241.88 859 841 171.2
A 12 189 18409 102.63 859 841 171.2
A 0 226 7575 39.34 859 841 171.2
B 10 244 146726 896.51 854 834 162.7
B 0 219 27936 166.54 854 834 162.7
B 0 85 21033 124.12 854 834 162.7
C 3 233 184368 937.43 853 860 195.8
C 13 61 6213 27.34 853 860 195.8
C 14 234 4447 18.32 853 860 195.8
D 8 195 450434 2238.73 848 830 200.8
D 1 52 122398 605.33 848 830 200.8
D 7 254 39470 192.4 848 830 200.8

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