ASTROSAT CZTI

Data Quality Report

Orbit 20906

Creation date: 2024-06-27T18:21:00.111875
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/AS1A06_002T03_9000003080_20906cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20906cztM0_level2_quad_clean.evt
Size (bytes)851,270,40099,976,320
Size811.8 MB 95.3 MB
Events in quadrant A3,545,185673,083
Events in quadrant B3,882,512674,221
Events in quadrant C3,469,621661,221
Events in quadrant D14,396,303515,754

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152221
B0160751
C0148731
D0477134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72111001.386770%
B72121792.481974%
C72121001.386578%
D7211404356.067120%

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 7436 7212 16 16 0.22% 0.22%
B 7437 7213 19 19 0.26% 0.26%
C 7437 7213 0 0 0.00% 0.00%
D 7436 7212 4095 4095 55.07% 56.78%

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 5 16 87082 485.14 883 864 177.7
A 15 174 34231 187.75 883 864 177.7
A 6 16 30305 165.66 883 864 177.7
B 7 220 139657 835.36 873 853 166.2
B 3 64 124235 742.55 873 853 166.2
B 0 189 70364 418.34 873 853 166.2
C 14 238 132856 666.73 843 845 198.0
C 8 222 21956 106.62 843 845 198.0
C 10 91 20965 101.62 843 845 198.0
D 1 52 8259699 45686.48 738 715 180.8
D 1 239 3022438 16715.36 738 715 180.8
D 1 20 211205 1164.37 738 715 180.8

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