ASTROSAT CZTI

Data Quality Report

Orbit 15673

Creation date: 2024-06-27T17:11:55.742446
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_084T01_9000002318_15673cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15673cztM0_level2_quad_clean.evt
Size (bytes)465,831,36088,332,480
Size444.3 MB 84.2 MB
Events in quadrant A3,214,646554,072
Events in quadrant B3,433,436565,139
Events in quadrant C3,459,872547,262
Events in quadrant D3,538,763535,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139373
B0144942
C0144422
D0148742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6784290.427476%
B6784430.633844%
C6784851.252948%
D6784761.120283%

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 9035 6787 3 3 0.03% 0.04%
B 9035 6787 0 0 0.00% 0.00%
C 9035 6787 20 20 0.22% 0.29%
D 9035 6787 59 59 0.65% 0.87%

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 13 248 20385 117.34 828 811 166.8
A 9 143 8695 47.26 828 811 166.8
A 0 226 7302 38.91 828 811 166.8
B 0 189 57395 360.66 835 814 156.9
B 4 80 44354 277.53 835 814 156.9
B 4 216 26642 164.63 835 814 156.9
C 14 238 125897 678.06 800 807 184.5
C 0 207 115999 624.4 800 807 184.5
C 3 233 98140 527.6 800 807 184.5
D 1 52 390134 1832.3 796 781 212.5
D 10 70 49399 228.8 796 781 212.5
D 2 120 25799 117.73 796 781 212.5

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