ASTROSAT CZTI

Data Quality Report

Orbit 37901

Creation date: 2024-06-27T21:45:55.215066
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/AS1T05_059T01_9000005354_37901cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37901cztM0_level2_quad_clean.evt
Size (bytes)478,621,44071,536,320
Size456.4 MB 68.2 MB
Events in quadrant A4,280,180428,884
Events in quadrant B3,297,698452,765
Events in quadrant C2,931,060462,662
Events in quadrant D3,606,365430,292

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162183
B0134842
C0122562
D0145842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558966011.808910%
B55892183.900519%
C5589851.520845%
D55893215.743425%

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 7111 5590 617 617 8.68% 11.04%
B 7111 5590 168 168 2.36% 3.01%
C 7111 5590 78 78 1.10% 1.40%
D 7111 5590 223 223 3.14% 3.99%

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 15 222 1532638 12557.31 600 589 122.0
A 10 83 357995 2929.45 600 589 122.0
A 13 6 20911 166.57 600 589 122.0
B 5 172 624489 5236.07 613 596 119.2
B 4 81 45816 379.51 613 596 119.2
B 0 186 40180 332.21 613 596 119.2
C 0 10 293212 2085.78 600 604 140.3
C 15 214 235246 1672.58 600 604 140.3
C 14 254 46279 325.58 600 604 140.3
D 1 52 710526 4895.59 590 573 145.0
D 12 233 182749 1256.22 590 573 145.0
D 13 200 104740 718.3 590 573 145.0

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