ASTROSAT CZTI

Data Quality Report

Orbit 36955

Creation date: 2024-06-27T21:33:31.555622
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_024T01_9000005250_36955cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36955cztM0_level2_quad_clean.evt
Size (bytes)303,096,96064,212,480
Size289.1 MB 61.2 MB
Events in quadrant A1,949,869425,289
Events in quadrant B2,148,528422,697
Events in quadrant C2,180,087421,335
Events in quadrant D2,628,921393,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084241
B089941
C090121
D0105541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3982110.276243%
B3982491.230537%
C3982330.828729%
D39821704.269211%

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 5775 3983 7 7 0.12% 0.18%
B 5775 3983 35 35 0.61% 0.88%
C 5775 3983 22 22 0.38% 0.55%
D 5775 3983 137 137 2.37% 3.44%

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 143336 1515.69 458 450 94.3
A 15 174 24196 251.89 458 450 94.3
A 13 6 11033 112.26 458 450 94.3
B 0 229 101793 1163.23 451 440 87.1
B 5 255 73150 834.5 451 440 87.1
B 5 172 61319 698.71 451 440 87.1
C 14 254 202101 1956.28 440 445 103.1
C 15 214 168742 1632.66 440 445 103.1
C 0 10 91750 885.76 440 445 103.1
D 12 233 221557 2035.08 436 423 108.7
D 2 153 152213 1396.91 436 423 108.7
D 2 249 102239 937.0 436 423 108.7

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