ASTROSAT CZTI

Data Quality Report

Orbit 15930

Creation date: 2024-06-27T17:15:28.909559
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_066T02_9000002346_15930cztM0_level2.evt modeM0/AS1G08_066T02_9000002346_15930cztM0_level2_quad_clean.evt
Size (bytes)989,925,120165,902,400
Size944.1 MB 158.2 MB
Events in quadrant A7,906,2871,001,509
Events in quadrant B7,212,3151,034,880
Events in quadrant C7,193,753983,537
Events in quadrant D6,653,094969,957

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324662
B0309042
C0304782
D0305222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149791761.174978%
B149791731.154950%
C149791911.275118%
D149791350.901262%

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 16030 14980 3 3 0.02% 0.02%
B 16030 14980 18 18 0.11% 0.12%
C 16030 14980 0 0 0.00% 0.00%
D 16030 14980 4 4 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 15 239 1072690 3017.37 1766 1730 354.9
A 15 174 19786 50.87 1766 1730 354.9
A 0 226 16021 40.26 1766 1730 354.9
B 0 189 56074 159.57 1771 1725 340.6
B 4 173 48424 137.11 1771 1725 340.6
B 4 216 47748 135.12 1771 1725 340.6
C 3 233 302835 757.55 1700 1708 397.5
C 14 238 258557 646.16 1700 1708 397.5
C 13 61 12048 26.01 1700 1708 397.5
D 2 234 61194 141.53 1729 1678 420.5
D 13 172 39084 88.95 1729 1678 420.5
D 13 168 25406 56.42 1729 1678 420.5

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