ASTROSAT CZTI

Data Quality Report

Orbit 45825

Creation date: 2024-06-27T23:16:36.155142
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_185T01_9000006128_45825cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45825cztM0_level2_quad_clean.evt
Size (bytes)690,992,640116,193,600
Size659.0 MB 110.8 MB
Events in quadrant A8,720,779664,586
Events in quadrant B6,566,407791,561
Events in quadrant C3,582,158814,782
Events in quadrant D6,116,159715,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307082
B0246392
C0162502
D0233532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7651165421.618089%
B765187011.371063%
C76512623.424389%
D76515807.580708%

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 8121 7652 1005 1005 12.38% 13.13%
B 8121 7652 310 310 3.82% 4.05%
C 8121 7652 17 17 0.21% 0.22%
D 8121 7652 316 316 3.89% 4.13%

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 2954366 17427.62 815 796 169.5
A 15 14 2385651 14071.9 815 796 169.5
A 13 248 201444 1183.93 815 796 169.5
B 3 112 2415715 14036.6 867 838 172.0
B 0 171 175773 1016.82 867 838 172.0
B 0 189 146823 848.55 867 838 172.0
C 12 250 80894 381.62 888 891 209.6
C 3 233 32241 149.54 888 891 209.6
C 1 3 6798 28.18 888 891 209.6
D 11 241 686399 3131.33 875 846 218.9
D 12 2 605854 2763.44 875 846 218.9
D 1 52 290765 1324.23 875 846 218.9

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