ASTROSAT CZTI

Data Quality Report

Orbit 46576

Creation date: 2024-06-27T23:24:57.870213
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/AS1C07_001T10_9000006232_46576cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46576cztM0_level2_quad_clean.evt
Size (bytes)653,172,480105,819,840
Size622.9 MB 100.9 MB
Events in quadrant A6,356,326749,919
Events in quadrant B3,159,870798,201
Events in quadrant C2,897,388772,841
Events in quadrant D11,244,980415,721

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233828
B0141062
C0136342
D0381242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67042063.072792%
B6705500.745712%
C670580.119314%
D6705289643.191648%

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 7880 6706 29 29 0.37% 0.43%
B 7879 6704 7 7 0.09% 0.10%
C 7879 6705 1 1 0.01% 0.01%
D 7879 6704 2665 2665 33.82% 39.75%

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 3454685 22794.82 735 720 151.5
A 13 248 21048 134.16 735 720 151.5
A 15 192 13173 82.18 735 720 151.5
B 0 245 67875 468.69 747 724 143.3
B 4 158 60876 419.84 747 724 143.3
B 3 112 36159 247.32 747 724 143.3
C 12 250 21911 124.14 733 735 170.6
C 14 254 9931 53.91 733 735 170.6
C 13 61 5118 25.69 733 735 170.6
D 13 138 6877927 46776.5 590 571 147.0
D 1 52 816892 5552.23 590 571 147.0
D 12 233 335339 2276.93 590 571 147.0

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