ASTROSAT CZTI

Data Quality Report

Orbit 11550

Creation date: 2024-06-27T16:15:06.197537
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/AS1T01_206T01_9000001694_11550cztM0_level2.evt modeM0/AS1T01_206T01_9000001694_11550cztM0_level2_quad_clean.evt
Size (bytes)619,320,96066,971,520
Size590.6 MB 63.9 MB
Events in quadrant A5,347,921398,140
Events in quadrant B4,646,133407,887
Events in quadrant C3,180,521405,148
Events in quadrant D5,163,445384,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202752
B0178861
C0130841
D0194101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61834717.617661%
B61834236.841339%
C6183560.905709%
D618369011.159631%

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 7479 6185 225 225 3.01% 3.64%
B 7479 6185 210 210 2.81% 3.40%
C 7479 6185 0 0 0.00% 0.00%
D 7479 6185 493 493 6.59% 7.97%

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 8 5 1846957 11187.31 818 804 165.0
A 1 162 104634 629.19 818 804 165.0
A 1 178 63806 381.78 818 804 165.0
B 4 239 1059463 6842.65 821 806 154.7
B 3 64 202142 1301.34 821 806 154.7
B 11 51 81278 520.13 821 806 154.7
C 13 61 6200 29.0 814 820 185.5
C 7 159 3855 16.36 814 820 185.5
C 13 250 2593 9.56 814 820 185.5
D 2 120 1083952 5819.9 778 759 186.1
D 1 52 962088 5165.13 778 759 186.1
D 13 137 48406 256.0 778 759 186.1

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