ASTROSAT CZTI

Data Quality Report

Orbit 24843

Creation date: 2024-06-27T19:10:32.494223
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/AS1A08_003T04_9000003634_24843cztM0_level2.evt modeM0/AS1A08_003T04_9000003634_24843cztM0_level2_quad_clean.evt
Size (bytes)331,479,36031,942,080
Size316.1 MB 30.5 MB
Events in quadrant A1,929,614195,976
Events in quadrant B1,991,009199,118
Events in quadrant C1,963,158186,755
Events in quadrant D3,901,946122,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079272
B081042
C080012
D0139613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36942597.011370%
B36942917.877639%
C36942817.606930%
D3693110029.786082%

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 3754 3696 0 0 0.00% 0.00%
B 3754 3696 0 0 0.00% 0.00%
C 3754 3696 0 0 0.00% 0.00%
D 3753 3695 844 844 22.49% 22.84%

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 13 254 5233 45.75 500 487 103.7
A 3 137 5072 44.2 500 487 103.7
A 0 226 4269 36.46 500 487 103.7
B 0 189 22448 221.7 495 482 99.1
B 12 111 12529 121.59 495 482 99.1
B 11 111 11763 113.86 495 482 99.1
C 14 238 73944 645.63 476 477 113.8
C 2 16 14834 126.17 476 477 113.8
C 8 128 8620 71.56 476 477 113.8
D 1 52 2054845 19110.13 433 418 107.5
D 8 195 167989 1558.73 433 418 107.5
D 5 222 25190 230.42 433 418 107.5

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