ASTROSAT CZTI

Data Quality Report

Orbit 26314

Creation date: 2024-06-27T19:27:21.664298
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_008T02_9000003796_26314cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26314cztM0_level2_quad_clean.evt
Size (bytes)474,304,320119,180,160
Size452.3 MB 113.7 MB
Events in quadrant A3,205,310802,943
Events in quadrant B3,273,577827,684
Events in quadrant C3,301,027785,543
Events in quadrant D4,164,830761,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133890
B0135770
C0135290
D0163470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181340.550073%
B6181480.776573%
C6181490.792752%
D61812333.769617%

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 7501 6182 0 0 0.00% 0.00%
B 7501 6182 0 0 0.00% 0.00%
C 7501 6182 1 1 0.01% 0.02%
D 7501 6182 157 157 2.09% 2.54%

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 13 254 10194 56.99 831 817 164.5
A 0 226 7262 39.17 831 817 164.5
A 3 137 7181 38.68 831 817 164.5
B 12 111 17743 111.02 832 814 152.5
B 15 185 16618 103.64 832 814 152.5
B 11 111 15880 98.8 832 814 152.5
C 14 238 131322 707.79 803 809 184.4
C 2 16 27427 144.35 803 809 184.4
C 3 233 12645 64.19 803 809 184.4
D 1 52 973993 5212.41 794 777 186.7
D 11 176 108828 578.71 794 777 186.7
D 12 233 61240 323.83 794 777 186.7

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