ASTROSAT CZTI

Data Quality Report

Orbit 46475

Creation date: 2024-06-27T23:23:35.910790
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/AS1T05_203T01_9000006214_46475cztM0_level2.fits modeM0/AS1T05_203T01_9000006214_46475cztM0_level2_quad_clean.evt
Size (bytes)485,389,440113,529,600
Size462.9 MB 108.3 MB
Events in quadrant A6,560,392754,447
Events in quadrant B3,544,776793,017
Events in quadrant C3,217,513759,014
Events in quadrant D4,144,112681,210

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235544
B0146272
C0137802
D0164932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64513455.348008%
B64512854.417920%
C64511382.139203%
D64513004.650442%

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 7596 6451 29 29 0.38% 0.45%
B 7596 6451 79 79 1.04% 1.22%
C 7596 6451 2 2 0.03% 0.03%
D 7596 6451 137 137 1.80% 2.12%

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 3159294 19370.11 787 771 163.1
A 2 79 236479 1445.51 787 771 163.1
A 0 243 58880 356.36 787 771 163.1
B 5 32 313227 2028.48 792 768 154.0
B 0 190 47891 305.92 792 768 154.0
B 12 111 19676 122.75 792 768 154.0
C 3 233 89400 480.33 788 792 184.5
C 12 2 32335 170.99 788 792 184.5
C 12 249 15388 79.12 788 792 184.5
D 1 52 410596 2139.13 773 748 191.6
D 0 240 403894 2104.15 773 748 191.6
D 13 249 194702 1012.31 773 748 191.6

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