ASTROSAT CZTI

Data Quality Report

Orbit 05427

Creation date: 2024-06-27T14:55:04.071630
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/AS1G05_132T01_9000000686_05427cztM0_level2.evt modeM0/AS1G05_132T01_9000000686_05427cztM0_level2_quad_clean.evt
Size (bytes)481,645,44076,815,360
Size459.3 MB 73.3 MB
Events in quadrant A3,024,966485,577
Events in quadrant B3,235,998495,346
Events in quadrant C2,785,473486,633
Events in quadrant D5,124,903431,085

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130873
B0135705
C0125324
D0193985

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120831.356209%
B6119500.817127%
C6119200.326851%
D61204587.483660%

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 7440 6121 30 30 0.40% 0.49%
B 7440 6121 8 8 0.11% 0.13%
C 7440 6121 0 0 0.00% 0.00%
D 7441 6122 474 474 6.37% 7.74%

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 0 50 171445 1123.47 738 722 152.0
A 15 174 7998 47.88 738 722 152.0
A 0 226 7497 44.58 738 722 152.0
B 15 204 140134 979.02 753 737 142.4
B 0 219 84628 589.18 753 737 142.4
B 4 48 37599 258.89 753 737 142.4
C 14 67 9251 52.06 710 713 164.0
C 13 61 5896 31.61 710 713 164.0
C 12 4 3553 17.32 710 713 164.0
D 2 33 986572 5825.87 687 666 169.2
D 12 233 714172 4216.22 687 666 169.2
D 8 195 224672 1323.69 687 666 169.2

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