ASTROSAT CZTI

Data Quality Report

Orbit 47923

Creation date: 2024-10-15T13:42:38.454036
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_025T02_9000006380_47923cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47923cztM0_level2_quad_clean.evt
Size (bytes)471,447,36098,758,080
Size449.6 MB 94.2 MB
Events in quadrant A6,248,552644,088
Events in quadrant B3,040,483698,373
Events in quadrant C2,942,818665,019
Events in quadrant D4,755,700565,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022702251
B01323271
C012976107
D018499189

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01222
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59623676.155652%
B59881292.154309%
C59781001.672800%
D59675509.217362%

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 7545 6021 95 95 1.26% 1.58%
B 7545 6026 43 43 0.57% 0.71%
C 7544 6025 36 36 0.48% 0.60%
D 7544 6025 457 457 6.06% 7.59%

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 3432215 24679.33 667 652 139.0
A 13 248 169524 1214.5 667 652 139.0
A 0 31 68814 490.21 667 652 139.0
B 5 255 241923 1807.22 683 662 133.5
B 0 183 34062 250.19 683 662 133.5
B 0 198 33947 249.33 683 662 133.5
C 14 254 138716 864.64 678 684 159.6
C 6 255 78834 489.54 678 684 159.6
C 12 2 53014 327.8 678 684 159.6
D 2 37 1502718 9273.72 649 630 162.0
D 2 249 598081 3688.59 649 630 162.0
D 14 34 47650 290.3 649 630 162.0

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