ASTROSAT CZTI

Data Quality Report

Orbit 34004

Creation date: 2024-06-27T20:55:16.005431
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/AS1A11_106T03_9000004864_34004cztM0_level2.evt modeM0/AS1A11_106T03_9000004864_34004cztM0_level2_quad_clean.evt
Size (bytes)448,902,72058,910,400
Size428.1 MB 56.2 MB
Events in quadrant A2,625,488369,932
Events in quadrant B3,013,041366,784
Events in quadrant C3,227,802353,200
Events in quadrant D4,379,676332,901

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108042
B0119641
C0126131
D0164201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5149120.233055%
B5149781.514857%
C5149841.631385%
D51492855.535055%

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 7242 5150 1 1 0.01% 0.02%
B 7242 5150 52 52 0.72% 1.01%
C 7242 5150 75 75 1.04% 1.46%
D 7242 5150 268 268 3.70% 5.20%

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 15 169 76325 589.22 652 641 128.4
A 10 83 16990 127.28 652 641 128.4
A 13 6 16381 122.54 652 641 128.4
B 5 172 270454 2272.38 635 620 118.7
B 0 182 67439 562.71 635 620 118.7
B 0 189 38225 316.68 635 620 118.7
C 4 254 253271 1805.69 614 620 139.9
C 15 214 223801 1595.07 614 620 139.9
C 0 10 162844 1159.41 614 620 139.9
D 8 195 680102 4086.47 611 598 166.3
D 13 249 417266 2505.8 611 598 166.3
D 12 6 367869 2208.73 611 598 166.3

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