ASTROSAT CZTI

Data Quality Report

Orbit 40379

Creation date: 2024-06-27T22:15:28.121998
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/AS1A12_056T02_9000005538_40379cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40379cztM0_level2_quad_clean.evt
Size (bytes)424,448,64094,155,840
Size404.8 MB 89.8 MB
Events in quadrant A3,586,365662,433
Events in quadrant B3,092,502680,822
Events in quadrant C2,848,833651,936
Events in quadrant D5,725,544443,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143253
B0130852
C0121592
D0211912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5885811.376381%
B5885330.560748%
C5885130.220901%
D5885162327.578590%

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 7168 5886 48 48 0.67% 0.82%
B 7168 5886 18 18 0.25% 0.31%
C 7168 5886 6 6 0.08% 0.10%
D 7168 5885 667 667 9.31% 11.33%

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 516634 3896.29 645 634 132.4
A 6 10 270187 2035.38 645 634 132.4
A 13 248 262046 1973.91 645 634 132.4
B 3 112 357477 2867.93 642 624 124.4
B 4 171 68402 544.71 642 624 124.4
B 0 229 60361 480.09 642 624 124.4
C 15 214 253666 1713.76 635 639 147.6
C 14 254 62648 419.99 635 639 147.6
C 12 249 25462 168.13 635 639 147.6
D 12 227 2935065 21301.33 544 528 137.8
D 2 250 187341 1356.05 544 528 137.8
D 12 191 182070 1317.78 544 528 137.8

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