ASTROSAT CZTI

Data Quality Report

Orbit 07963

Creation date: 2024-06-27T15:26:06.505181
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/AS1G06_077T01_9000001090_07963cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07963cztM0_level2_quad_clean.evt
Size (bytes)2,499,076,800422,455,680
Size2.3 GB 402.9 MB
Events in quadrant A15,237,2202,691,387
Events in quadrant B15,375,8122,797,035
Events in quadrant C25,385,8932,514,959
Events in quadrant D17,554,8652,621,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06442
C06440
D06440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0667487
B0669346
C0970196
D0742948

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A315793781.196998%
B315793321.051332%
C31579461514.614142%
D315787242.292735%

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 38679 31587 94 94 0.24% 0.30%
B 38679 31587 27 27 0.07% 0.09%
C 38679 31586 4169 4169 10.78% 13.20%
D 38679 31587 361 361 0.93% 1.14%

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 0 254 477356 622.77 3781 3702 760.6
A 15 239 55948 68.69 3781 3702 760.6
A 13 248 47984 58.22 3781 3702 760.6
B 5 255 129590 174.99 3844 3753 719.1
B 10 16 112261 150.89 3844 3753 719.1
B 4 239 101335 135.7 3844 3753 719.1
C 9 68 11400847 14564.93 3419 3443 782.5
C 1 16 552201 701.27 3419 3443 782.5
C 8 208 72181 87.84 3419 3443 782.5
D 1 52 2107705 2313.6 3667 3575 909.5
D 5 233 529042 577.78 3667 3575 909.5
D 13 104 463470 505.68 3667 3575 909.5

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