ASTROSAT CZTI

Data Quality Report

Orbit 38025

Creation date: 2024-06-27T21:47:28.268533
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/AS1A11_082T01_9000005356_38025cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38025cztM0_level2_quad_clean.evt
Size (bytes)349,755,84098,991,360
Size333.6 MB 94.4 MB
Events in quadrant A3,041,846670,279
Events in quadrant B3,173,921690,516
Events in quadrant C2,785,300663,648
Events in quadrant D3,520,115590,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123733
B0129122
C0113102
D0139762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5467300.548747%
B54671001.829157%
C5467100.182916%
D54671783.255899%

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 7319 5468 17 17 0.23% 0.31%
B 7319 5468 68 68 0.93% 1.24%
C 7319 5468 7 7 0.10% 0.13%
D 7319 5468 143 143 1.95% 2.62%

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 376591 2914.53 640 629 129.0
A 12 16 121197 934.67 640 629 129.0
A 12 194 22261 167.7 640 629 129.0
B 5 255 211266 1727.17 641 624 122.0
B 5 172 152906 1248.64 641 624 122.0
B 4 171 103747 845.56 641 624 122.0
C 15 214 232939 1595.67 633 638 145.6
C 14 254 50437 342.07 633 638 145.6
C 0 10 9268 59.28 633 638 145.6
D 13 249 320345 2123.98 620 603 150.5
D 2 250 256456 1699.58 620 603 150.5
D 7 223 151973 1005.52 620 603 150.5

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