ASTROSAT CZTI

Data Quality Report

Orbit 27756

Creation date: 2024-06-27T19:43:57.150096
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/AS1A10_002T05_9000004000_27756cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27756cztM0_level2_quad_clean.evt
Size (bytes)389,292,48073,782,720
Size371.3 MB 70.4 MB
Events in quadrant A2,652,077469,206
Events in quadrant B2,701,006467,737
Events in quadrant C2,880,462452,247
Events in quadrant D3,167,260445,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116020
B0116960
C0121030
D0135500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5714470.822541%
B5714631.102555%
C5714771.347567%
D5715400.699913%

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 6069 5714 2 2 0.03% 0.04%
B 6069 5714 0 0 0.00% 0.00%
C 6069 5714 8 8 0.13% 0.14%
D 6070 5716 15 15 0.25% 0.26%

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 0 13 12119 82.58 682 667 138.7
A 13 254 8892 59.31 682 667 138.7
A 3 137 6711 43.59 682 667 138.7
B 4 52 20206 149.0 676 657 131.2
B 12 111 16680 122.12 676 657 131.2
B 0 190 15762 115.13 676 657 131.2
C 3 233 114908 733.48 656 659 155.8
C 14 238 104187 664.66 656 659 155.8
C 15 208 90319 575.62 656 659 155.8
D 1 52 595468 3726.45 662 645 159.6
D 2 250 47809 295.47 662 645 159.6
D 2 234 23941 145.94 662 645 159.6

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