ASTROSAT CZTI

Data Quality Report

Orbit 39245

Creation date: 2024-06-27T22:02:13.739719
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/AS1A12_095T01_9000005450_39245cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39245cztM0_level2_quad_clean.evt
Size (bytes)433,319,04082,368,000
Size413.2 MB 78.6 MB
Events in quadrant A2,664,332603,601
Events in quadrant B3,348,545566,624
Events in quadrant C2,344,903568,048
Events in quadrant D7,311,339421,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106272
B0129011
C096781
D0250501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4768150.314597%
B47683878.116611%
C476860.125839%
D4768144130.222315%

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 6921 4769 9 9 0.13% 0.19%
B 6921 4769 250 250 3.61% 5.24%
C 6921 4769 2 2 0.03% 0.04%
D 6921 4768 1230 1230 17.77% 25.80%

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 381151 3334.32 568 558 114.1
A 13 248 65935 572.76 568 558 114.1
A 10 255 22988 196.51 568 558 114.1
B 5 172 988983 9905.03 532 517 99.8
B 5 184 137080 1368.44 532 517 99.8
B 5 255 64945 645.61 532 517 99.8
C 15 214 203518 1624.02 540 543 125.0
C 9 187 25075 196.28 540 543 125.0
C 0 10 7028 51.89 540 543 125.0
D 12 235 5101555 43452.89 484 471 117.4
D 2 249 95259 807.44 484 471 117.4
D 12 227 83376 706.21 484 471 117.4

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