ASTROSAT CZTI

Data Quality Report

Orbit 36221

Creation date: 2022-06-10T10:48:08.673334
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_080T02_9000005176_36221cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36221cztM0_level2_quad_clean.evt
Size (bytes)523,834,56060,347,520
Size499.6 MB 57.6 MB
Events in quadrant A2,883,243369,660
Events in quadrant B3,663,818370,080
Events in quadrant C2,873,270366,925
Events in quadrant D6,073,317337,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118733
B0143672
C0117872
D0217642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5476310.566107%
B54762003.652301%
C5476330.602630%
D547678814.390066%

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 7118 5477 23 23 0.32% 0.42%
B 7118 5477 128 128 1.80% 2.34%
C 7118 5477 26 26 0.37% 0.47%
D 7118 5477 797 797 11.20% 14.55%

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 188189 1464.84 630 618 128.0
A 15 223 142344 1106.81 630 618 128.0
A 9 143 87245 676.51 630 618 128.0
B 5 172 503529 4214.1 621 604 119.3
B 5 236 366916 3069.4 621 604 119.3
B 0 213 142952 1192.76 621 604 119.3
C 15 214 229491 1585.81 614 616 144.3
C 0 207 167925 1159.24 614 616 144.3
C 0 10 82656 568.43 614 616 144.3
D 12 227 2378812 16516.72 583 566 144.0
D 12 6 747074 5184.43 583 566 144.0
D 2 250 191075 1323.07 583 566 144.0

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