ASTROSAT CZTI

Data Quality Report

Orbit 36663

Creation date: 2024-06-27T21:29:55.251122
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/AS1A11_049T05_9000005232_36663cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36663cztM0_level2_quad_clean.evt
Size (bytes)426,810,24056,168,640
Size407.0 MB 53.6 MB
Events in quadrant A2,719,499340,554
Events in quadrant B2,718,155344,281
Events in quadrant C3,018,464329,130
Events in quadrant D4,101,866307,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114163
B0114112
C0121012
D0157382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540870.129438%
B5408420.776627%
C54081092.015533%
D54083746.915680%

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 8723 5410 4 4 0.05% 0.07%
B 8723 5410 19 19 0.22% 0.35%
C 8723 5410 70 70 0.80% 1.29%
D 8723 5410 280 280 3.21% 5.18%

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 204312 1579.37 638 626 129.0
A 15 223 26206 198.35 638 626 129.0
A 13 6 10232 74.48 638 626 129.0
B 5 255 123057 1015.47 633 617 120.6
B 0 221 44994 368.05 633 617 120.6
B 8 128 24857 201.04 633 617 120.6
C 0 10 352639 2473.94 610 613 142.3
C 15 214 246995 1731.5 610 613 142.3
C 14 254 32415 223.5 610 613 142.3
D 4 239 505419 3487.91 594 578 144.7
D 13 249 389673 2688.23 594 578 144.7
D 2 249 205367 1414.87 594 578 144.7

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