ASTROSAT CZTI

Data Quality Report

Orbit 15777

Creation date: 2024-06-27T17:13:16.589099
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/AS1A04_100T01_9000002336_15777cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15777cztM0_level2_quad_clean.evt
Size (bytes)421,306,560107,513,280
Size401.8 MB 102.5 MB
Events in quadrant A2,986,684699,130
Events in quadrant B3,185,456726,870
Events in quadrant C3,125,954712,031
Events in quadrant D3,040,145686,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129663
B0134322
C0132372
D0132652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191280.452269%
B6191300.484574%
C6191651.049911%
D6191260.419964%

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 7527 6193 5 5 0.07% 0.08%
B 7527 6193 1 1 0.01% 0.02%
C 7527 6193 0 0 0.00% 0.00%
D 7527 6193 9 9 0.12% 0.15%

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 27052 169.74 769 756 154.9
A 0 226 6852 39.35 769 756 154.9
A 12 194 5668 31.71 769 756 154.9
B 0 189 39230 264.93 782 765 145.2
B 3 209 25823 172.59 782 765 145.2
B 12 111 16390 107.62 782 765 145.2
C 14 238 118485 669.8 757 766 175.8
C 3 233 28803 159.52 757 766 175.8
C 9 54 14029 75.46 757 766 175.8
D 1 52 91889 456.96 747 731 199.5
D 10 70 37977 186.71 747 731 199.5
D 2 234 24820 120.76 747 731 199.5

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