ASTROSAT CZTI

Data Quality Report

Orbit 08244

Creation date: 2024-06-27T15:29:54.147808
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_086T01_9000001142_08244cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08244cztM0_level2_quad_clean.evt
Size (bytes)1,201,754,880225,711,360
Size1.1 GB 215.3 MB
Events in quadrant A8,373,7171,404,064
Events in quadrant B9,849,1211,415,039
Events in quadrant C8,134,9451,389,455
Events in quadrant D8,771,4871,338,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380477
B04194015
C0377986
D03986710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03862
C03860
D03860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18697760.406482%
B186942321.241040%
C18697500.267423%
D18696680.363714%

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 21128 18702 6 6 0.03% 0.03%
B 21128 18701 124 124 0.59% 0.66%
C 21128 18702 0 0 0.00% 0.00%
D 21128 18702 25 25 0.12% 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 13 248 51149 112.23 2145 2097 437.1
A 8 15 48509 106.19 2145 2097 437.1
A 0 226 20179 41.37 2145 2097 437.1
B 10 16 1073262 2598.19 2159 2100 412.3
B 0 214 199646 479.16 2159 2100 412.3
B 11 51 96888 229.91 2159 2100 412.3
C 13 61 16009 28.87 2084 2088 482.1
C 5 128 7196 10.59 2084 2088 482.1
C 12 4 5287 6.63 2084 2088 482.1
D 8 230 411232 733.42 2057 2008 558.0
D 1 52 380643 678.6 2057 2008 558.0
D 2 234 70558 122.86 2057 2008 558.0

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