ASTROSAT CZTI

Data Quality Report

Orbit 44675

Creation date: 2024-06-27T23:05:10.484848
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_072T01_9000006008_44675cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44675cztM0_level2_quad_clean.evt
Size (bytes)461,868,480105,079,680
Size440.5 MB 100.2 MB
Events in quadrant A4,829,321716,285
Events in quadrant B3,302,617745,116
Events in quadrant C2,924,607716,072
Events in quadrant D5,547,339561,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196872
B0142292
C0132392
D0210093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63421362.144434%
B63421061.671397%
C6342260.409965%
D634190914.335278%

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 7537 6343 19 19 0.25% 0.30%
B 7537 6343 47 47 0.62% 0.74%
C 7537 6343 5 5 0.07% 0.08%
D 7536 6342 780 780 10.35% 12.30%

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 1959494 13270.69 716 700 147.6
A 13 248 84878 570.3 716 700 147.6
A 3 137 8132 50.35 716 700 147.6
B 0 189 143603 1030.92 716 694 138.6
B 4 171 113917 816.77 716 694 138.6
B 7 221 55911 398.33 716 694 138.6
C 3 233 65120 387.37 713 717 166.3
C 14 254 59758 355.11 713 717 166.3
C 2 14 7362 39.97 713 717 166.3
D 1 52 2357668 14594.42 639 619 161.5
D 2 249 203200 1254.34 639 619 161.5
D 13 171 132060 813.86 639 619 161.5

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