ASTROSAT CZTI

Data Quality Report

Orbit 10994

Creation date: 2024-06-27T16:06:40.370631
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/AS1G08_027T06_9000001594_10994cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10994cztM0_level2_quad_clean.evt
Size (bytes)1,624,760,640214,773,120
Size1.5 GB 204.8 MB
Events in quadrant A13,946,5121,294,088
Events in quadrant B13,239,4731,334,723
Events in quadrant C10,295,3281,321,098
Events in quadrant D10,474,9021,276,118

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538045
B0516074
C0436444
D0434494

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1854013887.486516%
B1854010785.814455%
C185406683.603020%
D185403281.769148%

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 20760 18545 1053 1053 5.07% 5.68%
B 20760 18545 633 633 3.05% 3.41%
C 20760 18545 483 483 2.33% 2.60%
D 20760 18545 237 237 1.14% 1.28%

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 8 5 5607960 13167.67 2099 2054 425.7
A 14 254 104588 240.84 2099 2054 425.7
A 0 12 64240 146.07 2099 2054 425.7
B 4 239 4175035 10187.26 2137 2084 409.6
B 0 214 164475 396.44 2137 2084 409.6
B 15 204 152482 367.16 2137 2084 409.6
C 4 254 2183611 4592.09 2053 2065 475.1
C 9 54 47756 96.18 2053 2065 475.1
C 4 238 31840 62.68 2053 2065 475.1
D 1 52 1157965 2110.38 2043 2002 547.7
D 8 195 502436 913.62 2043 2002 547.7
D 2 14 218354 394.98 2043 2002 547.7

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