ASTROSAT CZTI

Data Quality Report

Orbit 06754

Creation date: 2024-06-27T15:11:18.003640
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/AS1A02_006T01_9000000934_06754cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06754cztM0_level2_quad_clean.evt
Size (bytes)509,342,40086,716,800
Size485.7 MB 82.7 MB
Events in quadrant A3,355,071543,398
Events in quadrant B4,300,458540,960
Events in quadrant C3,072,526544,493
Events in quadrant D4,232,771520,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145103
B0174912
C0139862
D0172962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6846881.285422%
B68466098.895706%
C6846600.876424%
D6846721.051709%

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 8591 6848 11 11 0.13% 0.16%
B 8591 6848 300 300 3.49% 4.38%
C 8591 6848 0 0 0.00% 0.00%
D 8591 6848 9 9 0.10% 0.13%

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 4 2 73427 437.87 808 790 165.9
A 13 248 63519 378.14 808 790 165.9
A 13 251 47076 279.02 808 790 165.9
B 3 220 1223096 7999.18 787 769 152.8
B 12 111 15414 95.84 787 769 152.8
B 0 214 14853 92.17 787 769 152.8
C 13 61 6188 29.48 784 786 183.2
C 12 16 5625 26.41 784 786 183.2
C 9 247 3867 16.81 784 786 183.2
D 2 16 832778 4318.29 786 758 192.7
D 8 195 345995 1791.83 786 758 192.7
D 2 14 32175 163.06 786 758 192.7

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