ASTROSAT CZTI

Data Quality Report

Orbit 12644

Creation date: 2024-06-27T16:30:25.261744
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_071T01_9000001874_12644cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12644cztM0_level2_quad_clean.evt
Size (bytes)1,311,215,040214,925,760
Size1.2 GB 205.0 MB
Events in quadrant A8,375,2901,320,410
Events in quadrant B11,686,8111,317,556
Events in quadrant C8,343,1761,334,300
Events in quadrant D10,062,8481,270,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374074
B0465593
C0377763
D0429193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183712101.143106%
B183719865.367155%
C183711670.909041%
D183713822.079364%

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 20102 18372 0 0 0.00% 0.00%
B 20102 18372 591 591 2.94% 3.22%
C 20102 18372 34 34 0.17% 0.19%
D 20102 18372 226 226 1.12% 1.23%

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 15 156369 355.8 2127 2077 433.6
A 12 189 38026 82.9 2127 2077 433.6
A 0 226 19172 39.42 2127 2077 433.6
B 4 239 2706529 6768.72 2094 2041 399.6
B 3 64 355772 885.31 2094 2041 399.6
B 11 51 254960 633.0 2094 2041 399.6
C 15 208 207772 430.01 2068 2076 478.4
C 14 234 45182 90.11 2068 2076 478.4
C 7 239 15942 28.99 2068 2076 478.4
D 1 52 1234151 2488.65 2053 1992 495.1
D 10 157 678227 1365.82 2053 1992 495.1
D 13 249 119135 236.6 2053 1992 495.1

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