ASTROSAT CZTI

Data Quality Report

Orbit 16895

Creation date: 2024-06-27T17:29:12.763021
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/AS1A05_004T03_9000002508_16895cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16895cztM0_level2_quad_clean.evt
Size (bytes)636,511,680104,100,480
Size607.0 MB 99.3 MB
Events in quadrant A7,098,569642,011
Events in quadrant B3,820,690692,927
Events in quadrant C3,435,079664,316
Events in quadrant D4,431,665648,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260951
B0158421
C0148881
D0177811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7243156221.565650%
B7244951.311430%
C72441121.546107%
D72441181.628934%

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 7704 7246 898 898 11.66% 12.39%
B 7705 7247 3 3 0.04% 0.04%
C 7705 7247 0 0 0.00% 0.00%
D 7705 7247 62 62 0.80% 0.86%

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 15 174 3966882 24601.48 796 776 161.2
A 12 189 62953 385.68 796 776 161.2
A 0 226 7136 39.45 796 776 161.2
B 15 35 205450 1218.99 867 844 167.8
B 0 229 71688 422.07 867 844 167.8
B 4 216 32504 188.62 867 844 167.8
C 14 238 128470 658.56 832 834 193.8
C 3 233 48912 248.07 832 834 193.8
C 13 61 5943 26.36 832 834 193.8
D 1 52 899199 4334.95 847 821 207.2
D 15 0 192508 924.95 847 821 207.2
D 10 199 47192 223.75 847 821 207.2

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