ASTROSAT CZTI

Data Quality Report

Orbit 37487

Creation date: 2024-06-27T21:40:39.859402
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/AS1C07_001T11_9000005326_37487cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37487cztM0_level2_quad_clean.evt
Size (bytes)466,813,44095,955,840
Size445.2 MB 91.5 MB
Events in quadrant A3,326,308648,092
Events in quadrant B3,373,351643,193
Events in quadrant C2,825,080641,643
Events in quadrant D4,251,594600,097

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135093
B0137082
C0118032
D0163052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5316360.677201%
B53162314.345372%
C53161112.088036%
D53165019.424379%

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 6989 5317 18 18 0.26% 0.34%
B 6989 5317 193 193 2.76% 3.63%
C 6989 5317 96 96 1.37% 1.81%
D 6989 5317 475 475 6.80% 8.93%

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 15 222 685041 5763.38 587 573 118.8
A 10 83 279881 2351.84 587 573 118.8
A 13 6 55516 462.63 587 573 118.8
B 5 255 554241 5043.63 577 560 109.8
B 15 35 201617 1831.48 577 560 109.8
B 5 172 141630 1285.05 577 560 109.8
C 14 254 245753 1820.45 574 576 134.7
C 15 214 226054 1674.18 574 576 134.7
C 0 10 88428 652.3 574 576 134.7
D 13 249 970995 7217.82 556 540 134.5
D 2 249 349296 2593.89 556 540 134.5
D 12 227 229205 1700.71 556 540 134.5

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