ASTROSAT CZTI

Data Quality Report

Orbit 09265

Creation date: 2024-06-27T15:43:36.086783
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/AS1A03_091T05_9000001300_09265cztM0_level2.evt modeM0/AS1A03_091T05_9000001300_09265cztM0_level2_quad_clean.evt
Size (bytes)1,506,242,880219,548,160
Size1.4 GB 209.4 MB
Events in quadrant A13,659,6321,302,605
Events in quadrant B10,306,0591,373,663
Events in quadrant C9,648,2041,322,857
Events in quadrant D10,639,3891,259,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538986
B0434355
C0419045
D0451975

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202028614.261954%
B202022411.192951%
C20202700.346500%
D202022311.143451%

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 25292 20207 593 593 2.34% 2.93%
B 25292 20207 22 22 0.09% 0.11%
C 25292 20207 11 11 0.04% 0.05%
D 25292 20207 180 180 0.71% 0.89%

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 5 16 1872518 3814.9 2440 2393 490.2
A 8 5 1660570 3382.54 2440 2393 490.2
A 15 250 272072 550.12 2440 2393 490.2
B 0 214 275137 582.27 2503 2447 468.3
B 0 219 100025 208.36 2503 2447 468.3
B 0 245 60646 124.27 2503 2447 468.3
C 9 68 217033 390.21 2398 2410 550.0
C 14 234 65086 113.95 2398 2410 550.0
C 13 61 18144 28.61 2398 2410 550.0
D 1 52 576688 934.04 2357 2304 614.9
D 12 233 447353 723.72 2357 2304 614.9
D 2 136 358448 579.15 2357 2304 614.9

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