ASTROSAT CZTI

Data Quality Report

Orbit 15271

Creation date: 2024-06-27T17:06:08.419740
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/AS1A04_207T01_9000002254_15271cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15271cztM0_level2_quad_clean.evt
Size (bytes)488,085,12091,103,040
Size465.5 MB 86.9 MB
Events in quadrant A3,234,041593,009
Events in quadrant B3,419,940602,114
Events in quadrant C4,246,550582,251
Events in quadrant D3,462,075550,160

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135573
B0139802
C0169462
D0144552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186590.953767%
B6186921.487229%
C6186610.986098%
D61861532.473327%

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 7522 6187 0 0 0.00% 0.00%
B 7522 6187 21 21 0.28% 0.34%
C 7522 6188 29 29 0.39% 0.47%
D 7522 6188 106 106 1.41% 1.71%

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 173892 1082.05 788 773 160.0
A 9 143 22294 134.51 788 773 160.0
A 0 226 7281 40.68 788 773 160.0
B 10 16 91585 605.24 790 773 150.0
B 0 189 76032 501.58 790 773 150.0
B 0 229 39525 258.27 790 773 150.0
C 3 233 1306309 7540.63 753 758 173.1
C 13 61 5565 27.76 753 758 173.1
C 7 221 2838 12.01 753 758 173.1
D 7 38 211549 1154.81 745 723 182.6
D 13 172 178891 975.93 745 723 182.6
D 10 70 167871 915.56 745 723 182.6

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