ASTROSAT CZTI

Data Quality Report

Orbit 27167

Creation date: 2024-06-27T19:37:12.028530
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/AS1T03_245T01_9000003916_27167cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27167cztM0_level2_quad_clean.evt
Size (bytes)507,723,84098,976,960
Size484.2 MB 94.4 MB
Events in quadrant A3,314,060671,717
Events in quadrant B3,544,704668,418
Events in quadrant C3,099,889631,397
Events in quadrant D5,001,791597,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137430
B0145440
C0131290
D0190310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136600.977836%
B6137971.580577%
C6137781.270979%
D61374867.919179%

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 7351 6137 5 5 0.07% 0.08%
B 7352 6138 18 18 0.24% 0.29%
C 7352 6138 1 1 0.01% 0.02%
D 7352 6138 413 413 5.62% 6.73%

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 13 248 93275 563.67 814 799 164.1
A 6 16 50642 303.81 814 799 164.1
A 4 2 19030 111.12 814 799 164.1
B 15 33 265247 1738.92 801 784 152.1
B 5 172 80950 527.11 801 784 152.1
B 0 182 26892 171.67 801 784 152.1
C 14 238 122789 693.41 757 760 176.0
C 15 208 13227 70.84 757 760 176.0
C 3 233 8598 44.54 757 760 176.0
D 1 52 1494584 7618.26 747 734 196.1
D 12 233 206957 1051.69 747 734 196.1
D 15 0 178825 908.22 747 734 196.1

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