ASTROSAT CZTI

Data Quality Report

Orbit 25788

Creation date: 2024-06-27T19:21:25.650787
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/AS1A09_147T01_9000003754_25788cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25788cztM0_level2_quad_clean.evt
Size (bytes)2,417,241,600412,968,960
Size2.3 GB 393.8 MB
Events in quadrant A17,035,4742,623,387
Events in quadrant B15,084,0252,686,960
Events in quadrant C15,129,4362,568,012
Events in quadrant D23,859,8162,491,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706450
B0643800
C0642490
D0917300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3109510573.399260%
B310967092.280036%
C310968472.723823%
D3109517565.647210%

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 33655 31098 385 385 1.14% 1.24%
B 33656 31099 16 16 0.05% 0.05%
C 33656 31097 0 0 0.00% 0.00%
D 33655 31099 1115 1115 3.31% 3.59%

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 0 13 2387568 3142.73 3791 3701 758.5
A 13 254 43329 52.24 3791 3701 758.5
A 3 137 36393 43.1 3791 3701 758.5
B 0 190 103479 139.25 3772 3672 716.8
B 12 111 89914 120.32 3772 3672 716.8
B 11 111 81311 108.32 3772 3672 716.8
C 14 238 579962 673.24 3671 3693 856.0
C 3 233 235331 270.62 3671 3693 856.0
C 13 61 25171 25.09 3671 3693 856.0
D 1 52 6143559 7073.0 3659 3562 868.1
D 7 80 2967242 3414.03 3659 3562 868.1
D 13 104 439918 502.66 3659 3562 868.1

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