ASTROSAT CZTI

Data Quality Report

Orbit 48586

Creation date: 2024-09-22T00:24:21.533702
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/AS1A13_037T01_9000006436_48586cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48586cztM0_level2_quad_clean.evt
Size (bytes)1,718,902,080276,312,960
Size1.6 GB 263.5 MB
Events in quadrant A18,940,1441,916,367
Events in quadrant B12,305,7741,897,098
Events in quadrant C8,051,8501,926,934
Events in quadrant D22,849,7741,303,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0705672
B0503782
C0391632
D0815922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191837714.019184%
B1918414177.386364%
C191842491.297957%
D19183492225.658135%

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 20508 19187 34 34 0.17% 0.18%
B 20509 19188 749 749 3.65% 3.90%
C 20509 19188 0 0 0.00% 0.00%
D 20508 19187 3315 3315 16.16% 17.28%

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 10 83 10913952 25586.16 2059 2011 426.5
A 13 248 43905 98.23 2059 2011 426.5
A 13 254 37825 83.98 2059 2011 426.5
B 12 16 3336250 8323.87 2027 1955 400.6
B 5 255 880569 2193.41 2027 1955 400.6
B 12 111 52594 126.42 2027 1955 400.6
C 3 233 17669 32.23 2058 2070 483.9
C 14 67 15920 28.62 2058 2070 483.9
C 13 61 13810 24.26 2058 2070 483.9
D 2 165 14749517 31640.12 1851 1791 466.1
D 13 171 543782 1162.8 1851 1791 466.1
D 2 249 230021 489.65 1851 1791 466.1

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