ASTROSAT CZTI

Data Quality Report

Orbit 14816

Creation date: 2024-06-27T17:00:03.845631
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/AS1G08_010T02_9000002188_14816cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14816cztM0_level2_quad_clean.evt
Size (bytes)538,839,36064,428,480
Size513.9 MB 61.4 MB
Events in quadrant A3,134,330390,286
Events in quadrant B3,409,616388,939
Events in quadrant C5,954,402345,109
Events in quadrant D3,382,400375,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133392
B0141321
C0217591
D0145761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452410.635462%
B6452941.456913%
C6452101915.793552%
D64521522.355859%

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 7378 6454 6 6 0.08% 0.09%
B 7378 6454 41 41 0.56% 0.64%
C 7378 6454 589 589 7.98% 9.13%
D 7378 6454 125 125 1.69% 1.94%

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 12 189 68692 431.35 779 763 157.5
A 9 143 34376 213.45 779 763 157.5
A 4 2 34124 211.85 779 763 157.5
B 3 64 183005 1228.25 775 755 148.4
B 0 229 36958 243.99 775 755 148.4
B 0 189 33202 218.67 775 755 148.4
C 4 254 2863703 17690.62 692 693 161.8
C 3 233 368773 2274.37 692 693 161.8
C 4 238 19713 117.52 692 693 161.8
D 7 254 399582 2144.66 741 721 186.0
D 13 104 97186 518.69 741 721 186.0
D 13 249 42078 222.38 741 721 186.0

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