ASTROSAT CZTI

Data Quality Report

Orbit 39259

Creation date: 2024-06-27T22:02:23.324803
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_093T02_9000005452_39259cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39259cztM0_level2_quad_clean.evt
Size (bytes)513,017,28079,234,560
Size489.3 MB 75.6 MB
Events in quadrant A2,718,321615,536
Events in quadrant B3,017,823623,439
Events in quadrant C2,480,801597,832
Events in quadrant D10,392,652219,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108103
B0119542
C099752
D0342172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4887120.245549%
B48871452.967055%
C4887100.204625%
D4887325866.666667%

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 7040 4888 6 6 0.09% 0.12%
B 7040 4888 93 93 1.32% 1.90%
C 7040 4888 4 4 0.06% 0.08%
D 7040 4888 2845 2845 40.41% 58.20%

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 403786 3396.77 588 577 118.7
A 13 248 32758 271.1 588 577 118.7
A 13 254 7219 55.95 588 577 118.7
B 5 172 331025 3020.69 575 562 109.4
B 5 255 290155 2647.11 575 562 109.4
B 0 190 89857 816.23 575 562 109.4
C 15 214 224426 1682.77 572 576 133.0
C 0 10 16256 117.87 572 576 133.0
C 13 61 3801 24.24 572 576 133.0
D 12 235 8347882 81822.14 414 402 102.0
D 5 222 135647 1325.67 414 402 102.0
D 2 120 128057 1251.28 414 402 102.0

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