ASTROSAT CZTI

Data Quality Report

Orbit 20230519_A12_025T08_9000005644_level2

Creation date: 2023-05-20T09:45:00.749156
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/AS1A12_025T08_9000005644cztM0_level2.fits modeM0/AS1A12_025T08_9000005644cztM0_level2_quad_clean.evt
Size (bytes)90,426,24080,582,400
Size86.2 MB 76.8 MB
Events in quadrant A538,640471,351
Events in quadrant B517,064469,642
Events in quadrant C522,832423,554
Events in quadrant D436,122351,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235090
B0219340
C0226080
D0338360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10451450.430581%
B10451270.258348%
C104512061.971103%
D10451124811.941441%

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 13315 10450 0 0 0.00% 0.00%
B 13315 10451 0 0 0.00% 0.00%
C 13315 10427 0 0 0.00% 0.00%
D 13315 10443 0 0 0.00% 0.00%

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 9 19 478 9.08 140 131 38.2
A 0 29 429 7.8 140 131 38.2
A 7 110 415 7.43 140 131 38.2
B 2 9 420 9.83 136 129 29.6
B 3 80 373 8.24 136 129 29.6
B 5 128 361 7.83 136 129 29.6
C 1 80 483 9.4 138 129 37.6
C 1 81 472 9.11 138 129 37.6
C 3 203 394 7.04 138 129 37.6
D 7 3 345 6.53 124 113 35.5
D 6 67 340 6.39 124 113 35.5
D 13 238 327 6.02 124 113 35.5

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