ASTROSAT CZTI

Data Quality Report

Orbit 12808

Creation date: 2024-06-27T16:32:36.147354
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_071T01_9000001888_12808cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12808cztM0_level2_quad_clean.evt
Size (bytes)502,922,88070,061,760
Size479.6 MB 66.8 MB
Events in quadrant A3,490,443422,921
Events in quadrant B4,488,437419,183
Events in quadrant C3,263,009421,136
Events in quadrant D3,550,381406,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143993
B0176562
C0137122
D0146342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465971.500387%
B64653485.382831%
C6465731.129157%
D64651131.747873%

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 7711 6466 0 0 0.00% 0.00%
B 7711 6466 152 152 1.97% 2.35%
C 7711 6466 1 1 0.01% 0.02%
D 7711 6466 34 34 0.44% 0.53%

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 12 189 123974 712.46 870 855 172.8
A 8 15 20384 113.01 870 855 172.8
A 0 226 7755 39.93 870 855 172.8
B 4 239 691292 4393.35 844 825 157.2
B 10 245 278485 1766.71 844 825 157.2
B 0 219 164279 1040.04 844 825 157.2
C 14 234 6469 29.47 835 842 190.9
C 13 61 6091 27.49 835 842 190.9
C 12 4 2792 10.21 835 842 190.9
D 1 52 228840 1069.45 834 818 213.2
D 8 195 104025 484.05 834 818 213.2
D 2 234 23928 108.39 834 818 213.2

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