ASTROSAT CZTI

Data Quality Report

Orbit 08671

Creation date: 2024-06-27T15:35:43.168996
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/AS1G07_024T01_9000001206_08671cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08671cztM0_level2_quad_clean.evt
Size (bytes)424,955,520118,771,200
Size405.3 MB 113.3 MB
Events in quadrant A3,202,640773,092
Events in quadrant B3,203,352812,606
Events in quadrant C2,805,108809,444
Events in quadrant D3,230,887763,264

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139123
B0139162
C0128542
D0142172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62881462.321883%
B6288901.431298%
C6288380.604326%
D62881091.733461%

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 8793 6289 107 107 1.22% 1.70%
B 8793 6289 27 27 0.31% 0.43%
C 8793 6290 0 0 0.00% 0.00%
D 8793 6289 72 72 0.82% 1.14%

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 0 254 285932 1979.15 709 692 144.1
A 13 251 127598 880.54 709 692 144.1
A 15 174 27474 185.83 709 692 144.1
B 0 231 105680 768.2 733 716 136.6
B 10 16 98969 719.08 733 716 136.6
B 4 80 41173 296.09 733 716 136.6
C 1 16 7877 43.8 715 718 163.4
C 13 61 5495 29.23 715 718 163.4
C 12 4 3921 19.6 715 718 163.4
D 2 152 205886 1203.54 701 678 170.5
D 12 233 201163 1175.84 701 678 170.5
D 2 14 35801 205.99 701 678 170.5

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