ASTROSAT CZTI

Data Quality Report

Orbit 45181

Creation date: 2024-06-27T23:10:16.821921
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/AS1A13_049T05_9000006050_45181cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45181cztM0_level2_quad_clean.evt
Size (bytes)1,949,852,160405,650,880
Size1.8 GB 386.9 MB
Events in quadrant A21,800,5602,672,447
Events in quadrant B13,372,4372,811,013
Events in quadrant C12,694,5162,721,981
Events in quadrant D22,308,3762,293,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0844619
B0571728
C0562927
D0844764

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2591611404.398827%
B259185071.956169%
C259173251.254003%
D25919270910.451792%

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 28303 25921 432 432 1.53% 1.67%
B 28304 25924 61 61 0.22% 0.24%
C 28304 25923 177 177 0.63% 0.68%
D 28304 25924 2139 2139 7.56% 8.25%

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 8940408 15133.57 2864 2802 590.6
A 15 223 1327379 2242.84 2864 2802 590.6
A 15 174 339631 570.33 2864 2802 590.6
B 3 112 578599 1026.16 2886 2787 561.1
B 5 185 485169 859.66 2886 2787 561.1
B 4 170 284448 501.95 2886 2787 561.1
C 14 254 909603 1368.87 2849 2866 662.4
C 12 250 162522 241.03 2849 2866 662.4
C 3 233 124704 183.93 2849 2866 662.4
D 13 249 4545452 6639.21 2730 2647 684.2
D 1 52 1329627 1939.35 2730 2647 684.2
D 5 235 1120577 1633.83 2730 2647 684.2

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