ASTROSAT CZTI

Data Quality Report

Orbit 38204

Creation date: 2024-06-27T21:49:43.633954
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/AS1A07_145T01_9000005370_38204cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38204cztM0_level2_quad_clean.evt
Size (bytes)301,487,04091,065,600
Size287.5 MB 86.8 MB
Events in quadrant A2,807,632608,931
Events in quadrant B2,522,979628,341
Events in quadrant C2,596,965602,080
Events in quadrant D2,826,455553,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114613
B0109422
C0108772
D0117822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5208100.192012%
B5208260.499232%
C5208170.326421%
D5208601.152074%

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 7121 5209 5 5 0.07% 0.10%
B 7121 5209 19 19 0.27% 0.36%
C 7121 5209 12 12 0.17% 0.23%
D 7121 5209 49 49 0.69% 0.94%

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 365975 3046.67 590 576 119.9
A 12 189 80881 669.58 590 576 119.9
A 9 143 30507 249.56 590 576 119.9
B 5 184 120993 1052.92 590 575 114.4
B 0 229 39486 340.23 590 575 114.4
B 5 172 19196 162.82 590 575 114.4
C 15 214 217867 1616.66 574 579 134.4
C 14 254 85125 629.04 574 579 134.4
C 2 16 26461 192.57 574 579 134.4
D 13 171 245338 1770.0 572 556 138.3
D 2 16 69835 500.95 572 556 138.3
D 13 249 68350 490.21 572 556 138.3

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