ASTROSAT CZTI

Data Quality Report

Orbit 02454

Creation date: 2024-06-27T14:18:00.515506
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/AS1G02_018T06_9000000370_02454cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02454cztM0_level2_quad_clean.evt
Size (bytes)458,202,24090,768,960
Size437.0 MB 86.6 MB
Events in quadrant A3,236,918563,284
Events in quadrant B3,337,202575,191
Events in quadrant C3,139,939570,470
Events in quadrant D3,677,637543,171

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146873
B0149592
C0146332
D0163252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7134430.602747%
B7134640.897112%
C7134450.630782%
D71342082.915615%

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 8329 7136 9 9 0.11% 0.13%
B 8329 7136 13 13 0.16% 0.18%
C 8329 7136 7 7 0.08% 0.10%
D 8329 7136 143 143 1.72% 2.00%

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 8 15 111985 665.4 803 784 167.1
A 0 149 20260 116.54 803 784 167.1
A 0 226 10537 58.36 803 784 167.1
B 15 255 138704 860.74 821 801 160.2
B 4 200 12213 71.23 821 801 160.2
B 12 111 11268 65.33 821 801 160.2
C 2 53 47077 250.16 782 783 185.1
C 9 191 14348 73.3 782 783 185.1
C 13 61 7062 33.93 782 783 185.1
D 13 53 380290 2072.99 767 747 183.1
D 6 112 186862 1016.52 767 747 183.1
D 5 239 43928 235.85 767 747 183.1

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