ASTROSAT CZTI

Data Quality Report

Orbit 15852

Creation date: 2024-06-27T17:14:22.271483
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_143T01_9000002344_15852cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15852cztM0_level2_quad_clean.evt
Size (bytes)824,987,52082,961,280
Size786.8 MB 79.1 MB
Events in quadrant A6,951,729489,817
Events in quadrant B3,367,389583,785
Events in quadrant C3,237,087556,448
Events in quadrant D10,968,601406,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251821
B0144600
C0139930
D0371830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6812166624.456841%
B6812921.350558%
C6812971.423958%
D6812289342.469172%

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 7553 6815 1465 1465 19.40% 21.50%
B 7553 6815 4 4 0.05% 0.06%
C 7553 6815 0 0 0.00% 0.00%
D 7553 6814 2657 2657 35.18% 38.99%

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 15 239 4125075 27384.6 733 716 150.6
A 0 226 6506 38.44 733 716 150.6
A 12 194 5379 30.96 733 716 150.6
B 4 173 115451 726.85 818 797 157.7
B 0 189 23262 142.42 818 797 157.7
B 12 111 18554 112.57 818 797 157.7
C 14 238 121074 644.04 789 795 186.8
C 3 233 21201 109.26 789 795 186.8
C 7 247 11482 57.22 789 795 186.8
D 1 52 8626378 57530.83 609 593 149.9
D 7 223 32132 210.35 609 593 149.9
D 2 234 20476 132.61 609 593 149.9

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