ASTROSAT CZTI

Data Quality Report

Orbit 17990

Creation date: 2024-06-27T17:43:31.062387
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/AS1A05_108T02_9000002676_17990cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17990cztM0_level2_quad_clean.evt
Size (bytes)522,498,24067,685,760
Size498.3 MB 64.6 MB
Events in quadrant A3,513,107406,146
Events in quadrant B3,616,250407,087
Events in quadrant C3,715,461386,726
Events in quadrant D4,530,202387,892

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146722
B0149042
C0152672
D0179482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6619991.495694%
B66191181.782747%
C66191832.764768%
D66192103.172685%

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 7844 6619 1 1 0.01% 0.02%
B 7844 6619 17 17 0.22% 0.26%
C 7844 6620 16 16 0.20% 0.24%
D 7844 6619 111 111 1.42% 1.68%

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 4 2 22799 121.67 906 889 180.1
A 14 237 10207 51.75 906 889 180.1
A 0 226 7841 38.61 906 889 180.1
B 3 64 56589 335.15 893 873 166.2
B 12 111 19116 109.74 893 873 166.2
B 0 197 18697 107.22 893 873 166.2
C 0 207 161146 805.45 856 864 199.0
C 14 238 135322 675.68 856 864 199.0
C 3 233 73093 362.97 856 864 199.0
D 7 238 443484 2052.71 867 846 215.6
D 11 176 311946 1442.71 867 846 215.6
D 5 222 296635 1371.71 867 846 215.6

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