ASTROSAT CZTI

Data Quality Report

Orbit 35947

Creation date: 2022-06-09T04:28:07.498467
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/AS1A11_080T01_9000005146_35947cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35947cztM0_level2_quad_clean.evt
Size (bytes)478,022,40098,795,520
Size455.9 MB 94.2 MB
Events in quadrant A3,111,302659,184
Events in quadrant B3,775,607644,863
Events in quadrant C3,425,148642,163
Events in quadrant D3,742,794611,836

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128853
B0150972
C0136242
D0151132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225130.208835%
B62251582.538153%
C62251161.863454%
D62251412.265060%

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 9149 6227 0 0 0.00% 0.00%
B 9149 6227 103 103 1.13% 1.65%
C 9149 6227 91 91 0.99% 1.46%
D 9149 6227 114 114 1.25% 1.83%

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 182899 1180.45 753 741 154.3
A 15 169 13023 79.59 753 741 154.3
A 13 254 9686 57.97 753 741 154.3
B 5 172 500796 3497.34 736 719 143.0
B 0 213 151438 1054.07 736 719 143.0
B 5 255 90555 628.28 736 719 143.0
C 0 10 325421 1940.57 718 726 167.3
C 15 214 258974 1543.45 718 726 167.3
C 0 207 24313 140.97 718 726 167.3
D 13 249 342318 1907.09 721 702 179.1
D 2 250 187503 1042.83 721 702 179.1
D 8 195 138791 770.89 721 702 179.1

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