ASTROSAT CZTI

Data Quality Report

Orbit 38247

Creation date: 2024-06-27T21:50:16.157835
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/AS1A07_145T01_9000005370_38247cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38247cztM0_level2_quad_clean.evt
Size (bytes)398,485,44090,501,120
Size380.0 MB 86.3 MB
Events in quadrant A2,700,247608,336
Events in quadrant B2,437,621628,514
Events in quadrant C3,212,863596,779
Events in quadrant D5,994,708540,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111673
B0107532
C0127062
D0215322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521990.172447%
B5219160.306572%
C52191112.126844%
D52192665.096762%

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 7252 5220 7 7 0.10% 0.13%
B 7252 5220 4 4 0.06% 0.08%
C 7252 5220 105 105 1.45% 2.01%
D 7252 5220 295 295 4.07% 5.65%

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 362055 3011.94 587 575 120.0
A 12 189 33436 273.8 587 575 120.0
A 13 6 18110 146.1 587 575 120.0
B 5 172 50277 441.01 588 574 112.7
B 0 229 32360 282.04 588 574 112.7
B 4 232 16628 142.45 588 574 112.7
C 14 254 394511 2965.15 571 576 132.9
C 15 214 218411 1639.65 571 576 132.9
C 15 208 177967 1335.22 571 576 132.9
D 10 203 2363722 17258.47 565 550 136.9
D 12 235 1044780 7626.11 565 550 136.9
D 13 249 182783 1330.87 565 550 136.9

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