ASTROSAT CZTI

Data Quality Report

Orbit 41489

Creation date: 2024-06-27T22:29:43.292172
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_035T02_9000005676_41489cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41489cztM0_level2_quad_clean.evt
Size (bytes)316,048,32088,721,280
Size301.4 MB 84.6 MB
Events in quadrant A2,728,151617,103
Events in quadrant B2,321,873633,736
Events in quadrant C3,675,849548,301
Events in quadrant D2,595,085547,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109813
B099542
C0138202
D0109232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4850120.247423%
B485050.103093%
C48503847.917526%
D4850581.195876%

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 6974 4851 4 4 0.06% 0.08%
B 6974 4851 0 0 0.00% 0.00%
C 6974 4851 366 366 5.25% 7.54%
D 6974 4851 51 51 0.73% 1.05%

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 481753 4194.27 570 559 114.7
A 13 248 19178 162.29 570 559 114.7
A 2 79 15017 126.02 570 559 114.7
B 0 190 56147 515.05 569 556 107.9
B 0 245 15946 142.59 569 556 107.9
B 12 111 13109 116.3 569 556 107.9
C 0 10 690924 5593.13 532 535 123.4
C 14 254 476221 3853.73 532 535 123.4
C 15 214 196967 1591.38 532 535 123.4
D 12 6 159604 1185.08 556 542 134.2
D 1 47 94316 698.66 556 542 134.2
D 2 249 44532 327.74 556 542 134.2

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