ASTROSAT CZTI

Data Quality Report

Orbit 13853

Creation date: 2024-06-27T16:46:57.904074
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_199T01_9000002040_13853cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13853cztM0_level2_quad_clean.evt
Size (bytes)448,899,84072,103,680
Size428.1 MB 68.8 MB
Events in quadrant A3,195,904440,863
Events in quadrant B3,200,232451,759
Events in quadrant C3,051,731436,377
Events in quadrant D3,718,386413,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134053
B0133702
C0129912
D0151202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310651.030111%
B6310450.713154%
C6310250.396197%
D6310981.553090%

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 7521 6313 29 29 0.39% 0.46%
B 7521 6311 4 4 0.05% 0.06%
C 7521 6313 3 3 0.04% 0.05%
D 7521 6313 80 80 1.06% 1.27%

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 9 143 170182 1061.83 782 766 159.6
A 8 15 10253 59.46 782 766 159.6
A 1 162 8055 45.68 782 766 159.6
B 0 219 43718 289.28 786 766 148.5
B 3 209 34624 228.03 786 766 148.5
B 0 214 26562 173.73 786 766 148.5
C 3 233 94957 536.89 757 761 175.4
C 6 253 8174 42.25 757 761 175.4
C 13 61 5446 26.7 757 761 175.4
D 1 52 212264 1192.42 741 725 177.4
D 13 189 199789 1122.1 741 725 177.4
D 10 157 191266 1074.06 741 725 177.4

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