ASTROSAT CZTI

Data Quality Report

Orbit 17656

Creation date: 2024-06-27T17:39:11.053084
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/AS1A05_118T02_9000002612_17656cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17656cztM0_level2_quad_clean.evt
Size (bytes)470,082,240103,976,640
Size448.3 MB 99.2 MB
Events in quadrant A3,198,367683,750
Events in quadrant B3,293,227702,972
Events in quadrant C3,721,762661,076
Events in quadrant D3,568,267634,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139372
B0141902
C0154313
D0153112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6696160.238949%
B6696470.701912%
C6695570.851382%
D66951352.016430%

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 7866 6697 0 0 0.00% 0.00%
B 7866 6697 1 1 0.01% 0.01%
C 7865 6695 0 0 0.00% 0.00%
D 7865 6696 118 118 1.50% 1.76%

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 14 237 60540 360.23 816 798 165.8
A 0 226 7027 37.56 816 798 165.8
A 3 137 5938 30.99 816 798 165.8
B 0 230 22634 139.69 823 802 156.3
B 12 111 18725 114.68 823 802 156.3
B 14 1 16813 102.45 823 802 156.3
C 3 233 530370 2882.79 784 790 183.7
C 14 238 122529 662.69 784 790 183.7
C 5 218 11079 56.01 784 790 183.7
D 1 52 509443 2703.44 777 753 188.2
D 2 152 75156 395.42 777 753 188.2
D 13 189 38723 201.79 777 753 188.2

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