ASTROSAT CZTI

Data Quality Report

Orbit 29277

Creation date: 2024-06-27T20:02:09.163198
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/AS1A10_045T08_9000004208_29277cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29277cztM0_level2_quad_clean.evt
Size (bytes)510,223,68070,600,320
Size486.6 MB 67.3 MB
Events in quadrant A2,626,929441,931
Events in quadrant B3,020,493449,899
Events in quadrant C4,285,497431,139
Events in quadrant D5,141,751425,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115391
B0127371
C0167061
D0191901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574410.735558%
B55741001.794044%
C55744317.732329%
D55744878.736993%

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 5924 5575 0 0 0.00% 0.00%
B 5924 5575 7 7 0.12% 0.13%
C 5924 5574 37 37 0.62% 0.66%
D 5924 5575 295 295 4.98% 5.29%

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 10226 68.69 680 666 139.2
A 3 137 6959 45.22 680 666 139.2
A 0 226 5824 37.06 680 666 139.2
B 10 245 174173 1315.69 674 657 131.9
B 0 229 103959 783.29 674 657 131.9
B 0 183 70786 531.76 674 657 131.9
C 3 233 1525784 10204.09 632 636 149.5
C 14 238 162572 1083.44 632 636 149.5
C 14 254 90668 602.36 632 636 149.5
D 8 195 1004792 5967.83 638 626 168.3
D 1 52 995494 5912.57 638 626 168.3
D 7 80 341981 2028.7 638 626 168.3

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