ASTROSAT CZTI

Data Quality Report

Orbit 08398

Creation date: 2024-06-27T15:31:57.040955
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_062T01_9000001176_08398cztM0_level2.evt modeM0/AS1A03_062T01_9000001176_08398cztM0_level2_quad_clean.evt
Size (bytes)181,385,28029,940,480
Size173.0 MB 28.6 MB
Events in quadrant A1,315,439179,355
Events in quadrant B1,353,708182,772
Events in quadrant C1,278,243175,621
Events in quadrant D1,354,349169,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057191
B057601
C056811
D059381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2781140.503416%
B2781200.719166%
C278190.323625%
D2781130.467458%

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 2781 2781 0 0 0.00% 0.00%
B 2781 2781 0 0 0.00% 0.00%
C 2781 2781 1 1 0.04% 0.04%
D 2781 2781 3 3 0.11% 0.11%

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 21593 301.04 336 329 70.6
A 12 194 3055 38.59 336 329 70.6
A 0 226 3044 38.44 336 329 70.6
B 4 48 38003 569.84 335 327 66.1
B 12 111 7216 104.19 335 327 66.1
B 0 214 6077 86.97 335 327 66.1
C 1 16 12102 151.96 324 325 77.5
C 13 61 2431 27.17 324 325 77.5
C 3 233 913 7.58 324 325 77.5
D 2 152 49543 617.47 323 314 79.7
D 14 34 29597 367.29 323 314 79.7
D 2 136 11923 145.61 323 314 79.7

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