ASTROSAT CZTI

Data Quality Report

Orbit 25649

Creation date: 2024-06-27T19:19:56.287472
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/AS1A09_013T02_9000003734_25649cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25649cztM0_level2_quad_clean.evt
Size (bytes)482,336,640107,357,760
Size460.0 MB 102.4 MB
Events in quadrant A3,195,851717,476
Events in quadrant B3,210,563747,311
Events in quadrant C3,175,889705,946
Events in quadrant D4,607,365650,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131980
B0132990
C0132320
D0177510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153170.276288%
B6153250.406306%
C6153580.942630%
D61525128.322497%

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 7568 6155 0 0 0.00% 0.00%
B 7568 6155 0 0 0.00% 0.00%
C 7568 6155 0 0 0.00% 0.00%
D 7567 6154 396 396 5.23% 6.43%

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 8 192 124960 792.16 797 784 156.8
A 13 254 9055 52.76 797 784 156.8
A 3 137 6748 38.05 797 784 156.8
B 0 190 18089 118.91 806 789 145.5
B 12 111 17550 115.21 806 789 145.5
B 11 111 15314 99.84 806 789 145.5
C 14 238 127190 705.37 776 782 179.2
C 3 233 23638 127.54 776 782 179.2
C 13 61 5434 25.96 776 782 179.2
D 1 52 1523714 7731.96 739 725 197.0
D 8 195 235314 1190.97 739 725 197.0
D 2 244 25297 124.75 739 725 197.0

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