ASTROSAT CZTI

Data Quality Report

Orbit 20214

Creation date: 2024-06-27T18:12:31.476320
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_117T01_9000002998_20214cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20214cztM0_level2_quad_clean.evt
Size (bytes)316,944,00070,185,600
Size302.3 MB 66.9 MB
Events in quadrant A2,037,262463,301
Events in quadrant B2,345,195459,761
Events in quadrant C2,064,980443,376
Events in quadrant D2,842,847441,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091120
B0100170
C090660
D0115740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A451930.066386%
B4520400.884956%
C4520150.331858%
D45202084.601770%

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 4519 4519 0 0 0.00% 0.00%
B 4520 4520 8 8 0.18% 0.18%
C 4520 4520 0 0 0.00% 0.00%
D 4520 4520 166 166 3.67% 3.67%

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 14 238 19199 173.43 523 513 107.7
A 0 226 4416 36.23 523 513 107.7
A 13 254 4329 35.42 523 513 107.7
B 0 197 144699 1417.06 520 506 101.8
B 15 222 86913 849.17 520 506 101.8
B 7 220 17185 163.91 520 506 101.8
C 14 238 77817 648.04 504 507 119.3
C 3 233 13273 107.01 504 507 119.3
C 1 16 9479 75.21 504 507 119.3
D 7 38 595512 4831.9 506 492 123.1
D 5 222 143396 1160.46 506 492 123.1
D 7 238 81797 660.24 506 492 123.1

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