ASTROSAT CZTI

Data Quality Report

Orbit 47751

Creation date: 2024-07-27T15:09:39.116864
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/AS1C09_004T04_9000006346_47751cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47751cztM0_level2_quad_clean.evt
Size (bytes)426,216,960102,075,840
Size406.5 MB 97.3 MB
Events in quadrant A6,266,398676,894
Events in quadrant B3,187,063700,906
Events in quadrant C2,929,415665,532
Events in quadrant D2,921,072622,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233602
B0134851
C0131371
D0130891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60912514.120834%
B60921482.429416%
C6092921.510177%
D6092681.116218%

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 7231 6092 34 34 0.47% 0.56%
B 7232 6093 26 26 0.36% 0.43%
C 7232 6093 28 28 0.39% 0.46%
D 7232 6093 15 15 0.21% 0.25%

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 3468095 24491.35 686 671 141.6
A 9 191 57739 403.09 686 671 141.6
A 13 248 48105 335.04 686 671 141.6
B 0 200 171878 1277.14 684 663 134.1
B 7 221 78227 578.57 684 663 134.1
B 5 172 71355 527.31 684 663 134.1
C 12 2 173934 1110.29 669 672 156.1
C 14 254 94307 600.03 669 672 156.1
C 5 4 47127 297.69 669 672 156.1
D 1 232 95186 567.32 675 653 166.6
D 12 128 59295 351.93 675 653 166.6
D 2 249 39686 234.25 675 653 166.6

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