ASTROSAT CZTI

Data Quality Report

Orbit 46788

Creation date: 2024-06-27T23:27:39.156692
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_053T01_9000006266_46788cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46788cztM0_level2_quad_clean.evt
Size (bytes)496,497,60097,813,440
Size473.5 MB 93.3 MB
Events in quadrant A5,873,952646,384
Events in quadrant B3,687,623658,554
Events in quadrant C2,743,467651,485
Events in quadrant D5,584,010564,679

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209081
B0150464
C0130441
D0209261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63112103.327523%
B63091913.027421%
C6312490.776299%
D63126269.917617%

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 7086 6311 62 62 0.87% 0.98%
B 7086 6310 31 31 0.44% 0.49%
C 7087 6312 18 18 0.25% 0.29%
D 7087 6312 599 599 8.45% 9.49%

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 3018077 21508.75 676 660 140.3
A 13 248 104663 741.35 676 660 140.3
A 8 255 87800 621.15 676 660 140.3
B 3 112 808504 6107.55 668 649 132.3
B 5 255 89593 672.43 668 649 132.3
B 5 172 27918 206.16 668 649 132.3
C 14 254 128404 820.2 665 667 155.7
C 3 233 8112 47.8 665 667 155.7
C 14 67 7830 45.99 665 667 155.7
D 1 52 1255451 7561.24 653 631 166.0
D 2 37 625114 3762.98 653 631 166.0
D 13 249 591083 3557.92 653 631 166.0

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