ASTROSAT CZTI

Data Quality Report

Orbit 20512

Creation date: 2024-06-27T18:16:16.210991
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_115T03_9000003032_20512cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20512cztM0_level2_quad_clean.evt
Size (bytes)394,004,16055,765,440
Size375.8 MB 53.2 MB
Events in quadrant A2,460,833344,652
Events in quadrant B2,775,924348,818
Events in quadrant C2,479,286327,988
Events in quadrant D3,869,926309,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105601
B0114201
C0105181
D0148621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085180.353982%
B5085651.278269%
C5085450.884956%
D50853757.374631%

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 6335 5087 0 0 0.00% 0.00%
B 6335 5086 14 14 0.22% 0.28%
C 6335 5086 0 0 0.00% 0.00%
D 6335 5086 362 362 5.71% 7.12%

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 24344 183.64 632 620 129.2
A 0 226 5602 38.56 632 620 129.2
A 3 137 4871 32.91 632 620 129.2
B 7 220 114065 939.08 636 620 120.8
B 0 189 49126 401.52 636 620 120.8
B 0 197 32616 264.85 636 620 120.8
C 14 238 96716 677.99 604 609 141.8
C 3 233 10321 68.51 604 609 141.8
C 7 220 8766 57.54 604 609 141.8
D 15 0 405835 2790.62 587 569 145.2
D 2 16 374094 2572.05 587 569 145.2
D 1 52 345338 2374.04 587 569 145.2

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