ASTROSAT CZTI

Data Quality Report

Orbit 39301

Creation date: 2024-06-27T22:02:55.660050
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_044T04_9000005464_39301cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39301cztM0_level2_quad_clean.evt
Size (bytes)374,345,28052,369,920
Size357.0 MB 49.9 MB
Events in quadrant A2,118,868419,617
Events in quadrant B1,785,056438,342
Events in quadrant C1,736,032415,385
Events in quadrant D7,954,26374,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082942
B074041
C071311
D0259751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3358822.441930%
B3358280.833830%
C335880.238237%
D3358282784.187016%

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 5390 3359 57 57 1.06% 1.70%
B 5390 3359 16 16 0.30% 0.48%
C 5390 3359 5 5 0.09% 0.15%
D 5390 3359 2468 2468 45.79% 73.47%

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 13 248 309949 3780.82 403 396 81.9
A 10 83 250137 3050.29 403 396 81.9
A 13 254 4473 49.8 403 396 81.9
B 5 172 135754 1742.48 401 391 77.7
B 15 85 36367 463.11 401 391 77.7
B 5 255 13323 166.47 401 391 77.7
C 15 214 141937 1577.74 390 392 89.7
C 14 254 44266 489.04 390 392 89.7
C 3 233 21900 239.74 390 392 89.7
D 12 235 6943329 127441.54 220 214 54.5
D 13 249 74708 1367.34 220 214 54.5
D 5 222 38785 707.97 220 214 54.5

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