ASTROSAT CZTI

Data Quality Report

Orbit 14450

Creation date: 2024-06-27T16:55:21.027201
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/AS1G08_025T01_9000002130_14450cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14450cztM0_level2_quad_clean.evt
Size (bytes)559,353,60090,288,000
Size533.4 MB 86.1 MB
Events in quadrant A3,569,856574,516
Events in quadrant B4,149,817560,116
Events in quadrant C4,367,305558,513
Events in quadrant D4,359,972534,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152853
B0169912
C0175182
D0178862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72652243.083276%
B72653795.216793%
C72652102.890571%
D72653835.271851%

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 7331 7266 6 6 0.08% 0.08%
B 7331 7266 140 140 1.91% 1.93%
C 7331 7266 0 0 0.00% 0.00%
D 7331 7266 217 217 2.96% 2.99%

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 138794 772.61 875 857 178.5
A 8 15 33783 184.43 875 857 178.5
A 4 2 14401 75.86 875 857 178.5
B 10 16 455305 2725.46 860 838 166.7
B 15 222 108238 644.08 860 838 166.7
B 0 189 75871 449.98 860 838 166.7
C 3 233 1053621 5397.21 840 840 195.1
C 0 207 22062 108.8 840 840 195.1
C 7 247 17341 84.59 840 840 195.1
D 10 199 592475 2986.64 821 799 198.1
D 2 120 209563 1053.79 821 799 198.1
D 13 122 188850 949.24 821 799 198.1

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