ASTROSAT CZTI

Data Quality Report

Orbit 44462

Creation date: 2024-06-27T23:01:28.268108
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/AS1A13_077T01_9000005984_44462cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44462cztM0_level2_quad_clean.evt
Size (bytes)457,254,720113,892,480
Size436.1 MB 108.6 MB
Events in quadrant A5,055,211758,602
Events in quadrant B3,467,478784,414
Events in quadrant C3,385,046744,671
Events in quadrant D4,465,997666,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214452
B0151672
C0151182
D0181172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71062773.898114%
B71062002.814523%
C71061642.307909%
D71063785.319448%

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 7736 7107 1 1 0.01% 0.01%
B 7736 7106 18 18 0.23% 0.25%
C 7736 7107 11 11 0.14% 0.15%
D 7736 7106 191 191 2.47% 2.69%

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 1879737 11066.46 815 797 169.8
A 8 4 15766 88.16 815 797 169.8
A 0 243 13377 74.09 815 797 169.8
B 0 229 103489 639.24 810 785 160.7
B 5 172 69248 426.12 810 785 160.7
B 7 221 28621 173.26 810 785 160.7
C 14 254 177438 937.43 801 803 188.4
C 3 233 35570 184.51 801 803 188.4
C 12 16 25051 128.69 801 803 188.4
D 1 52 581027 2882.85 791 762 201.3
D 2 249 318223 1577.2 791 762 201.3
D 12 17 100068 493.37 791 762 201.3

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