ASTROSAT CZTI

Data Quality Report

Orbit 47618

Creation date: 2024-07-18T15:31:35.335283
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_071T01_9000006340_47618cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47618cztM0_level2_quad_clean.evt
Size (bytes)487,258,560109,370,880
Size464.7 MB 104.3 MB
Events in quadrant A7,895,335700,069
Events in quadrant B3,230,091757,855
Events in quadrant C2,987,213727,879
Events in quadrant D3,418,188670,812

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284661
B0138521
C0135751
D0146221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65206319.677914%
B6521691.058120%
C6521370.567398%
D65211071.640853%

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 7625 6521 312 312 4.09% 4.78%
B 7626 6522 7 7 0.09% 0.11%
C 7626 6522 2 2 0.03% 0.03%
D 7626 6522 59 59 0.77% 0.90%

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 3617318 23549.68 740 724 153.6
A 13 248 743977 4839.74 740 724 153.6
A 9 191 647518 4211.64 740 724 153.6
B 5 172 185306 1260.95 748 724 146.4
B 0 200 30672 204.59 748 724 146.4
B 5 255 18590 122.05 748 724 146.4
C 3 233 66796 379.38 743 747 174.1
C 14 254 24284 135.2 743 747 174.1
C 13 61 4888 23.79 743 747 174.1
D 2 249 301680 1622.67 748 726 185.5
D 2 165 101319 542.37 748 726 185.5
D 2 120 49380 262.33 748 726 185.5

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