ASTROSAT CZTI

Data Quality Report

Orbit 27905

Creation date: 2024-06-27T19:45:49.229959
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_048T06_9000004030_27905cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27905cztM0_level2_quad_clean.evt
Size (bytes)1,338,958,080229,968,000
Size1.2 GB 219.3 MB
Events in quadrant A7,956,9351,513,258
Events in quadrant B8,800,9811,530,487
Events in quadrant C8,100,8421,453,721
Events in quadrant D14,604,0681,355,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341780
B0365070
C0345920
D0550760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161171610.998945%
B161182191.358729%
C161182911.805435%
D16118170110.553419%

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 19263 16118 0 0 0.00% 0.00%
B 19264 16119 12 12 0.06% 0.07%
C 19264 16119 0 0 0.00% 0.00%
D 19264 16119 1474 1474 7.65% 9.14%

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 13 254 24845 55.95 2058 2020 407.9
A 3 137 19597 43.09 2058 2020 407.9
A 0 226 17621 38.24 2058 2020 407.9
B 15 32 482928 1247.33 2038 1992 385.6
B 0 229 92750 235.38 2038 1992 385.6
B 0 230 92015 233.48 2038 1992 385.6
C 14 238 325398 715.92 1947 1960 451.8
C 3 233 146687 320.35 1947 1960 451.8
C 2 16 22489 45.44 1947 1960 451.8
D 1 52 4948370 11084.58 1883 1838 446.3
D 8 195 2200624 4927.21 1883 1838 446.3
D 2 250 221717 492.72 1883 1838 446.3

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