ASTROSAT CZTI

Data Quality Report

Orbit 12658

Creation date: 2024-06-27T16:30:39.024538
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_174T01_9000001876_12658cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12658cztM0_level2_quad_clean.evt
Size (bytes)981,325,440169,920,000
Size935.9 MB 162.0 MB
Events in quadrant A6,374,7781,071,117
Events in quadrant B8,298,7971,050,025
Events in quadrant C6,621,3141,075,926
Events in quadrant D7,514,1281,019,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275904
B0329813
C0285843
D0313373

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134532231.657623%
B134537115.285067%
C134532321.724522%
D134533222.393518%

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 15004 13455 0 0 0.00% 0.00%
B 15004 13455 341 341 2.27% 2.53%
C 15004 13455 51 51 0.34% 0.38%
D 15004 13455 125 125 0.83% 0.93%

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 12 189 39994 113.77 1639 1603 337.4
A 8 15 23818 65.83 1639 1603 337.4
A 0 226 14638 38.63 1639 1603 337.4
B 4 239 1348909 4304.25 1617 1577 313.0
B 3 64 295807 939.96 1617 1577 313.0
B 11 51 149304 471.94 1617 1577 313.0
C 15 208 364286 974.23 1602 1613 372.3
C 13 61 11748 27.23 1602 1613 372.3
C 8 222 9972 22.45 1602 1613 372.3
D 1 52 813967 2129.2 1583 1542 381.6
D 10 157 393687 1027.73 1583 1542 381.6
D 13 249 152980 396.89 1583 1542 381.6

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