ASTROSAT CZTI

Data Quality Report

Orbit 20170412_G07_029T01_9000001158_level2

Creation date: 2025-11-11T11:20:48.946575
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/AS1G07_029T01_9000001158cztM0_level2.fits modeM0/AS1G07_029T01_9000001158cztM0_level2_quad_clean.evt
Size (bytes)1,198,036,8001,122,523,200
Size1.1 GB 1.0 GB
Events in quadrant A7,173,6126,507,322
Events in quadrant B7,022,0566,654,117
Events in quadrant C7,150,0746,297,254
Events in quadrant D6,214,5825,817,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025880
B025880
C025880
D025860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02912200
B02743160
C02680960
D02805180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12725957514.519130%
B12726028582.245796%
C12726215421.211674%
D12725915071.184199%

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 144966 127257 0 0 0.00% 0.00%
B 144966 127263 0 0 0.00% 0.00%
C 144966 127254 0 0 0.00% 0.00%
D 144966 127255 0 0 0.00% 0.00%

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 29 6725 10.68 1866 1734 467.3
A 7 110 5913 8.94 1866 1734 467.3
A 0 30 5235 7.49 1866 1734 467.3
B 2 9 6036 11.48 1849 1751 373.3
B 14 254 4792 8.15 1849 1751 373.3
B 3 17 4757 8.05 1849 1751 373.3
C 1 81 5209 6.91 1887 1743 501.4
C 1 80 5143 6.78 1887 1743 501.4
C 12 241 4954 6.4 1887 1743 501.4
D 3 14 4583 6.32 1771 1606 471.2
D 6 231 4532 6.21 1771 1606 471.2
D 7 5 4373 5.87 1771 1606 471.2

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