ASTROSAT CZTI

Data Quality Report

Orbit 33857

Creation date: 2024-06-27T20:53:24.654153
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/AS1A11_065T11_9000004830_33857cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33857cztM0_level2_quad_clean.evt
Size (bytes)331,971,84024,675,840
Size316.6 MB 23.5 MB
Events in quadrant A1,554,749145,450
Events in quadrant B2,103,371136,840
Events in quadrant C1,614,266142,164
Events in quadrant D4,569,407100,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062810
B081190
C064700
D0157200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310720.064371%
B31072066.630190%
C310730.096556%
D310791029.288703%

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 3107 3107 0 0 0.00% 0.00%
B 3107 3107 160 160 5.15% 5.15%
C 3107 3107 2 2 0.06% 0.06%
D 3107 3107 783 783 25.20% 25.20%

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 15 169 75937 973.89 380 373 77.6
A 13 6 7678 94.15 380 373 77.6
A 13 254 5472 65.72 380 373 77.6
B 5 172 600605 8597.99 359 350 69.8
B 5 255 27896 394.56 359 350 69.8
B 15 85 19488 274.12 359 350 69.8
C 15 214 128717 1516.91 362 364 84.6
C 14 254 25720 299.66 362 364 84.6
C 15 159 24162 281.25 362 364 84.6
D 2 250 1824713 24174.91 304 295 75.5
D 8 195 744811 9865.4 304 295 75.5
D 13 249 247650 3277.64 304 295 75.5

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