ASTROSAT CZTI

Data Quality Report

Orbit 42139

Creation date: 2024-06-27T22:37:25.174992
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/AS1C07_001T11_9000005760_42139cztM0_level2.fits modeM0/AS1C07_001T11_9000005760_42139cztM0_level2_quad_clean.evt
Size (bytes)320,022,72088,680,960
Size305.2 MB 84.6 MB
Events in quadrant A2,867,387594,261
Events in quadrant B2,641,462598,946
Events in quadrant C2,439,876596,887
Events in quadrant D3,496,942534,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117642
B0114512
C0105342
D0139782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141120.233418%
B51411042.022953%
C514140.077806%
D51411673.248395%

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 7024 5142 6 6 0.09% 0.12%
B 7024 5142 83 83 1.18% 1.61%
C 7024 5142 1 1 0.01% 0.02%
D 7024 5142 159 159 2.26% 3.09%

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 10 83 596228 5263.85 561 548 113.2
A 12 189 40660 354.45 561 548 113.2
A 7 3 32599 283.22 561 548 113.2
B 15 35 285465 2687.56 558 542 106.0
B 3 112 73405 687.29 558 542 106.0
B 5 255 35692 331.55 558 542 106.0
C 15 214 214714 1655.09 561 564 129.4
C 3 233 30298 229.8 561 564 129.4
C 12 249 6198 43.54 561 564 129.4
D 13 249 382485 2806.0 551 535 136.1
D 1 52 380867 2794.11 551 535 136.1
D 12 233 122185 893.7 551 535 136.1

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