ASTROSAT CZTI

Data Quality Report

Orbit 11877

Creation date: 2024-06-27T16:19:29.812243
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_209T01_9000001758_11877cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11877cztM0_level2_quad_clean.evt
Size (bytes)1,409,348,160279,017,280
Size1.3 GB 266.1 MB
Events in quadrant A12,301,1031,787,926
Events in quadrant B11,085,4871,826,092
Events in quadrant C7,893,2771,832,029
Events in quadrant D10,173,8091,750,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0486614
B0445073
C0368903
D0420183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1818710685.872326%
B181877203.958872%
C181871280.703799%
D181873391.863969%

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 20018 18191 737 737 3.68% 4.05%
B 20018 18191 372 372 1.86% 2.04%
C 20018 18191 16 16 0.08% 0.09%
D 20018 18191 182 182 0.91% 1.00%

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 7 144 3124324 7529.54 2041 1995 414.7
A 1 162 345795 829.08 2041 1995 414.7
A 8 15 292522 700.61 2041 1995 414.7
B 4 239 1749822 4484.42 2063 2011 389.8
B 0 85 398938 1018.41 2063 2011 389.8
B 15 204 301140 767.49 2063 2011 389.8
C 0 207 59289 124.44 2006 2011 460.3
C 13 61 15012 28.25 2006 2011 460.3
C 8 128 6131 8.95 2006 2011 460.3
D 1 52 846008 1763.05 1998 1937 478.8
D 8 195 694327 1446.23 1998 1937 478.8
D 13 249 286023 593.38 1998 1937 478.8

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