ASTROSAT CZTI

Data Quality Report

Orbit 15313

Creation date: 2024-06-27T17:06:44.625902
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/AS1T02_073T01_9000002260_15313cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15313cztM0_level2_quad_clean.evt
Size (bytes)523,195,200110,430,720
Size499.0 MB 105.3 MB
Events in quadrant A3,218,888739,131
Events in quadrant B3,221,765756,017
Events in quadrant C3,424,069742,296
Events in quadrant D5,562,749677,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135763
B0135662
C0141792
D0206212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61641001.622323%
B61641081.752109%
C6164931.508761%
D61645959.652823%

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 8730 6166 1 1 0.01% 0.02%
B 8730 6165 0 0 0.00% 0.00%
C 8730 6165 3 3 0.03% 0.05%
D 8730 6165 474 474 5.43% 7.69%

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 9 143 23910 140.24 828 814 164.7
A 15 239 8934 49.31 828 814 164.7
A 0 226 7327 39.55 828 814 164.7
B 12 111 17845 110.38 825 803 154.4
B 11 111 15494 95.16 825 803 154.4
B 14 111 12885 78.26 825 803 154.4
C 3 233 220613 1178.56 819 825 186.5
C 14 234 10202 50.28 819 825 186.5
C 13 61 5641 25.82 819 825 186.5
D 13 122 2277424 11919.0 795 771 191.0
D 2 33 231798 1209.5 795 771 191.0
D 2 234 20787 104.79 795 771 191.0

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