ASTROSAT CZTI

Data Quality Report

Orbit 42741

Creation date: 2024-06-27T22:43:42.816068
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_013T01_9000005822_42741cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42741cztM0_level2_quad_clean.evt
Size (bytes)476,795,52093,922,560
Size454.7 MB 89.6 MB
Events in quadrant A3,649,469660,860
Events in quadrant B5,094,332537,844
Events in quadrant C4,466,708632,979
Events in quadrant D3,971,141592,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143502
B0193119
C0172652
D0159422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60151272.111388%
B6014122520.369139%
C60143155.237779%
D60142654.406385%

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 7298 6016 103 103 1.41% 1.71%
B 7297 6015 1044 1044 14.31% 17.36%
C 7297 6015 292 292 4.00% 4.85%
D 7296 6014 291 291 3.99% 4.84%

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 650181 4756.32 663 650 136.6
A 13 248 416090 3042.15 663 650 136.6
A 13 254 8728 59.15 663 650 136.6
B 4 81 2150844 19205.08 565 547 112.0
B 5 172 600348 5357.04 565 547 112.0
B 0 156 30027 263.3 565 547 112.0
C 0 239 1204616 8060.85 636 640 149.4
C 4 254 422156 2822.13 636 640 149.4
C 15 214 245242 1637.66 636 640 149.4
D 1 47 982983 6211.74 642 625 158.1
D 5 171 135047 849.99 642 625 158.1
D 2 249 90562 568.7 642 625 158.1

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