ASTROSAT CZTI

Data Quality Report

Orbit 07969

Creation date: 2024-06-27T15:26:11.205377
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/AS1G06_077T01_9000001090_07969cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07969cztM0_level2_quad_clean.evt
Size (bytes)1,192,942,080176,676,480
Size1.1 GB 168.5 MB
Events in quadrant A6,732,0081,098,280
Events in quadrant B6,954,7311,119,740
Events in quadrant C13,250,4921,075,355
Events in quadrant D8,208,1661,051,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299266
B03025111
C04951332
D0346567

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145712471.695148%
B145683052.093630%
C145647465.122219%
D145705844.008236%

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 16508 14573 0 0 0.00% 0.00%
B 16508 14574 18 18 0.11% 0.12%
C 16508 14574 319 319 1.93% 2.19%
D 16508 14573 313 313 1.90% 2.15%

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 0 128 38817 105.22 1728 1688 352.9
A 0 254 33491 90.13 1728 1688 352.9
A 0 226 15703 39.72 1728 1688 352.9
B 10 16 80132 233.42 1735 1692 336.0
B 11 51 55126 159.01 1735 1692 336.0
B 12 111 38349 109.08 1735 1692 336.0
C 9 68 6666455 17330.64 1659 1667 384.6
C 1 16 106746 273.24 1659 1667 384.6
C 13 61 12635 28.52 1659 1667 384.6
D 1 52 794672 1941.18 1669 1616 408.5
D 4 95 620132 1513.95 1669 1616 408.5
D 2 14 332450 809.79 1669 1616 408.5

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