ASTROSAT CZTI

Data Quality Report

Orbit 28221

Creation date: 2024-06-27T19:49:19.273287
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/AS1A10_045T09_9000004072_28221cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28221cztM0_level2_quad_clean.evt
Size (bytes)542,761,92066,104,640
Size517.6 MB 63.0 MB
Events in quadrant A3,231,713395,370
Events in quadrant B3,738,541398,465
Events in quadrant C3,330,107387,088
Events in quadrant D5,692,980363,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138620
B0154460
C0140420
D0213450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6559410.625095%
B6559891.356914%
C6559981.494130%
D65584617.029582%

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 7564 6559 1 1 0.01% 0.02%
B 7564 6559 23 23 0.30% 0.35%
C 7564 6559 0 0 0.00% 0.00%
D 7563 6558 355 355 4.69% 5.41%

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 12 16 37820 223.44 823 805 165.7
A 12 194 11979 67.45 823 805 165.7
A 8 192 11822 66.5 823 805 165.7
B 10 245 522239 3333.91 814 793 156.4
B 12 111 19669 120.69 814 793 156.4
B 11 111 17752 108.43 814 793 156.4
C 14 238 127897 676.21 797 803 187.9
C 1 16 45425 237.41 797 803 187.9
C 9 221 23454 120.51 797 803 187.9
D 1 52 1989544 10608.35 782 760 187.5
D 7 238 350984 1868.13 782 760 187.5
D 8 195 174592 927.24 782 760 187.5

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