ASTROSAT CZTI

Data Quality Report

Orbit 26474

Creation date: 2024-06-27T19:29:28.379496
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_104T02_9000003826_26474cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26474cztM0_level2_quad_clean.evt
Size (bytes)509,469,120100,676,160
Size485.9 MB 96.0 MB
Events in quadrant A3,244,212691,206
Events in quadrant B3,248,144696,379
Events in quadrant C3,684,429642,139
Events in quadrant D4,846,228600,811

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133690
B0133590
C0148470
D0183930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59941191.985319%
B59941222.035369%
C59952203.669725%
D599560310.058382%

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 7314 5994 0 0 0.00% 0.00%
B 7314 5994 2 2 0.03% 0.03%
C 7315 5995 24 24 0.33% 0.40%
D 7315 5995 430 430 5.88% 7.17%

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 10486 57.33 841 829 168.5
A 0 226 7405 39.04 841 829 168.5
A 3 137 6945 36.31 841 829 168.5
B 12 111 17441 107.5 825 809 154.7
B 11 111 15789 96.83 825 809 154.7
B 14 111 13836 84.2 825 809 154.7
C 2 16 262233 1445.83 783 790 180.8
C 3 233 159429 877.3 783 790 180.8
C 14 238 129034 709.21 783 790 180.8
D 7 80 1460269 7888.14 776 758 185.0
D 1 52 212142 1142.45 776 758 185.0
D 12 233 129361 695.05 776 758 185.0

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