ASTROSAT CZTI

Data Quality Report

Orbit 16489

Creation date: 2024-06-27T17:23:27.135230
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_108T01_9000002438_16489cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16489cztM0_level2_quad_clean.evt
Size (bytes)558,103,68086,901,120
Size532.2 MB 82.9 MB
Events in quadrant A5,518,479492,108
Events in quadrant B3,913,343565,875
Events in quadrant C3,504,749546,098
Events in quadrant D3,485,404534,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212543
B0161952
C0147082
D0151792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A707784911.996609%
B70771091.540201%
C7077721.017380%
D7077380.536951%

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 9033 7079 778 778 8.61% 10.99%
B 9033 7080 21 21 0.23% 0.30%
C 9033 7079 0 0 0.00% 0.00%
D 9033 7080 17 17 0.19% 0.24%

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 15 174 2448283 15139.47 798 780 161.7
A 0 226 6964 38.25 798 780 161.7
A 3 137 5867 31.46 798 780 161.7
B 5 65 323369 1956.3 857 837 164.9
B 4 48 80198 481.36 857 837 164.9
B 0 189 38314 227.31 857 837 164.9
C 3 233 129356 668.91 824 830 192.1
C 14 238 127286 658.13 824 830 192.1
C 7 247 33629 170.7 824 830 192.1
D 5 222 160399 793.63 828 805 201.1
D 13 168 127846 631.75 828 805 201.1
D 2 234 21563 103.23 828 805 201.1

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