ASTROSAT CZTI

Data Quality Report

Orbit 42219

Creation date: 2024-06-27T22:38:39.181915
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/AS1A12_088T51_9000005780_42219cztM0_level2.fits modeM0/AS1A12_088T51_9000005780_42219cztM0_level2_quad_clean.evt
Size (bytes)345,715,20098,337,600
Size329.7 MB 93.8 MB
Events in quadrant A3,445,173654,786
Events in quadrant B2,665,649675,611
Events in quadrant C2,786,698637,901
Events in quadrant D3,423,775582,554

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138332
B0123582
C0122522
D0145312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110520.851064%
B611180.130911%
C611130.049092%
D6111901.472754%

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 8795 6112 44 44 0.50% 0.72%
B 8796 6113 2 2 0.02% 0.03%
C 8796 6113 0 0 0.00% 0.00%
D 8796 6113 85 85 0.97% 1.39%

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 609053 4432.86 663 649 137.2
A 15 222 206606 1500.61 663 649 137.2
A 13 248 53864 387.73 663 649 137.2
B 3 112 30682 232.06 664 644 129.4
B 12 111 16636 123.55 664 644 129.4
B 11 111 15157 112.12 664 644 129.4
C 15 214 254491 1674.43 647 650 151.6
C 7 220 4969 28.49 647 650 151.6
C 13 61 4376 24.58 647 650 151.6
D 12 6 374973 2385.09 640 622 157.0
D 1 52 233010 1480.61 640 622 157.0
D 2 249 94771 599.85 640 622 157.0

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