ASTROSAT CZTI

Data Quality Report

Orbit 34558

Creation date: 2022-02-18T03:23:19.857564
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/AS1A05_103T05_9000004938_34558cztM0_level2.evt modeM0/AS1A05_103T05_9000004938_34558cztM0_level2_quad_clean.evt
Size (bytes)563,993,28090,774,720
Size537.9 MB 86.6 MB
Events in quadrant A2,780,303604,653
Events in quadrant B3,877,491594,724
Events in quadrant C2,992,504596,227
Events in quadrant D7,028,894538,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121863
B0154462
C0123442
D0251802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928110.185560%
B59282253.795547%
C5928250.421727%
D592862610.560054%

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 7241 5929 1 1 0.01% 0.02%
B 7241 5929 132 132 1.82% 2.23%
C 7241 5929 17 17 0.23% 0.29%
D 7241 5929 590 590 8.15% 9.95%

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 10 83 46840 332.92 689 676 138.7
A 4 48 22730 159.05 689 676 138.7
A 9 143 18697 129.96 689 676 138.7
B 5 172 790165 6113.79 678 662 129.1
B 0 190 139260 1073.28 678 662 129.1
B 0 245 69338 531.82 678 662 129.1
C 15 214 249150 1583.6 671 676 156.9
C 0 10 88015 556.64 671 676 156.9
C 14 67 34611 216.28 671 676 156.9
D 8 195 2237055 13571.79 642 625 164.8
D 2 249 455871 2762.66 642 625 164.8
D 2 250 365764 2215.85 642 625 164.8

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