ASTROSAT CZTI

Data Quality Report

Orbit 30791

Creation date: 2024-06-27T20:19:40.230571
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_071T18_9000004448_30791cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30791cztM0_level2_quad_clean.evt
Size (bytes)731,494,08085,521,600
Size697.6 MB 81.6 MB
Events in quadrant A3,460,624558,454
Events in quadrant B5,413,942554,422
Events in quadrant C5,491,679512,510
Events in quadrant D7,329,616491,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141632
B0206994
C0210602
D0264542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67881341.974072%
B67872193.226757%
C67875968.781494%
D67876078.943569%

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 7653 6788 1 1 0.01% 0.01%
B 7652 6787 6 6 0.08% 0.09%
C 7652 6787 87 87 1.14% 1.28%
D 7652 6787 517 517 6.76% 7.62%

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 12811 66.59 895 881 179.2
A 3 137 8756 43.95 895 881 179.2
A 0 226 7586 37.42 895 881 179.2
B 6 159 1869552 11045.43 878 857 169.2
B 5 172 35658 205.7 878 857 169.2
B 4 171 24852 141.83 878 857 169.2
C 3 233 1892070 9809.07 825 831 192.8
C 0 10 205717 1062.66 825 831 192.8
C 14 238 132816 684.55 825 831 192.8
D 8 195 3468683 16047.39 834 817 216.1
D 12 227 439669 2030.77 834 817 216.1
D 13 249 182373 840.14 834 817 216.1

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