ASTROSAT CZTI

Data Quality Report

Orbit 39272

Creation date: 2024-06-27T22:02:33.181304
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_037T01_9000005456_39272cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39272cztM0_level2_quad_clean.evt
Size (bytes)552,130,56087,952,320
Size526.6 MB 83.9 MB
Events in quadrant A5,410,950569,823
Events in quadrant B2,807,268691,957
Events in quadrant C2,658,055652,157
Events in quadrant D9,155,589382,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194463
B0115262
C0106892
D0308372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523283515.959480%
B5232531.012997%
C523250.095566%
D5232222142.450306%

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 7263 5233 753 753 10.37% 14.39%
B 7263 5233 36 36 0.50% 0.69%
C 7263 5233 0 0 0.00% 0.00%
D 7263 5233 1795 1795 24.71% 34.30%

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 15 222 2765495 23366.61 588 579 118.3
A 10 83 369767 3120.05 588 579 118.3
A 13 254 6092 46.59 588 579 118.3
B 5 172 207028 1746.22 625 609 118.2
B 0 190 86343 725.27 625 609 118.2
B 5 255 45149 376.79 625 609 118.2
C 15 214 239497 1649.8 617 621 144.8
C 0 10 7854 49.95 617 621 144.8
C 13 61 4148 24.36 617 621 144.8
D 12 235 6948117 57575.05 502 490 120.7
D 2 249 177316 1465.36 502 490 120.7
D 12 227 44033 360.84 502 490 120.7

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