ASTROSAT CZTI

Data Quality Report

Orbit 27628

Creation date: 2024-06-27T19:42:20.715253
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/AS1T03_257T01_9000003976_27628cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27628cztM0_level2_quad_clean.evt
Size (bytes)489,974,40094,210,560
Size467.3 MB 89.8 MB
Events in quadrant A3,204,243618,187
Events in quadrant B3,792,920623,174
Events in quadrant C3,191,788594,374
Events in quadrant D4,201,578556,928

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138780
B0156570
C0136860
D0169530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601520.787759%
B66011241.878503%
C6601490.742312%
D66004076.166667%

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 7695 6600 6 6 0.08% 0.09%
B 7695 6601 67 67 0.87% 1.01%
C 7696 6602 0 0 0.00% 0.00%
D 7695 6601 166 166 2.16% 2.51%

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 12 96 30888 182.53 816 799 164.8
A 13 254 11693 66.09 816 799 164.8
A 8 192 11136 62.71 816 799 164.8
B 10 245 361752 2365.96 806 786 152.6
B 0 230 93369 606.84 806 786 152.6
B 0 190 76692 497.53 806 786 152.6
C 14 238 125328 680.18 782 787 183.1
C 3 233 7272 35.42 782 787 183.1
C 13 61 5452 25.48 782 787 183.1
D 1 52 649845 3519.13 770 748 184.4
D 2 250 341893 1849.54 770 748 184.4
D 7 80 201442 1088.08 770 748 184.4

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