ASTROSAT CZTI

Data Quality Report

Orbit 31688

Creation date: 2024-06-27T20:31:34.332732
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_103T09_9000004630_31688cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31688cztM0_level2_quad_clean.evt
Size (bytes)613,350,72094,426,560
Size584.9 MB 90.1 MB
Events in quadrant A3,350,189628,135
Events in quadrant B5,886,280622,787
Events in quadrant C3,995,374595,009
Events in quadrant D4,901,513557,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141542
B0220452
C0161202
D0189242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6541410.626815%
B65411542.354380%
C65412373.623299%
D65414536.925547%

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 7596 6542 12 12 0.16% 0.18%
B 7596 6542 61 61 0.80% 0.93%
C 7596 6542 112 112 1.47% 1.71%
D 7596 6542 473 473 6.23% 7.23%

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 0 13 163217 977.23 820 803 166.2
A 15 174 13823 78.34 820 803 166.2
A 13 254 13415 75.89 820 803 166.2
B 6 159 1883166 12161.2 810 792 154.8
B 10 245 425362 2742.96 810 792 154.8
B 0 229 128238 823.37 810 792 154.8
C 3 233 388210 2137.87 771 777 181.2
C 0 10 349707 1925.41 771 777 181.2
C 14 238 124566 683.07 771 777 181.2
D 12 227 1009331 5522.56 762 741 182.6
D 8 195 612338 3348.81 762 741 182.6
D 13 249 242160 1321.9 762 741 182.6

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