ASTROSAT CZTI

Data Quality Report

Orbit 20780

Creation date: 2024-06-27T18:19:31.114013
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_013T01_9000003070_20780cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20780cztM0_level2_quad_clean.evt
Size (bytes)192,617,28025,128,000
Size183.7 MB 24.0 MB
Events in quadrant A1,213,101144,621
Events in quadrant B1,460,065143,145
Events in quadrant C1,269,621139,780
Events in quadrant D1,702,771137,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06812
B07214
C06913
D06812

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068811405
B076681524
C069381402
D087251916

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114013171541492046
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A273110.036617%
B2731481.757598%
C2737180.657654%
D2703682.515723%

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 6688 2795 0 0 0.00% 0.00%
B 6651 2800 30 30 0.45% 1.07%
C 6663 2808 2 2 0.03% 0.07%
D 6641 2780 59 59 0.89% 2.12%

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 15 174 3763 52.97 314 307 65.2
A 0 226 2706 36.77 314 307 65.2
A 3 137 2516 33.86 314 307 65.2
B 7 220 135936 2271.4 311 303 59.7
B 0 219 44809 745.33 311 303 59.7
B 6 36 35125 583.15 311 303 59.7
C 14 238 48270 666.9 305 306 71.9
C 9 54 13143 178.49 305 306 71.9
C 7 247 11789 159.66 305 306 71.9
D 13 153 201974 2715.43 302 293 74.3
D 1 52 185213 2489.76 302 293 74.3
D 1 239 94832 1272.87 302 293 74.3

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