ASTROSAT CZTI

Data Quality Report

Orbit 14346

Creation date: 2024-06-27T16:53:50.349167
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/AS1G08_078T01_9000002110_14346cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14346cztM0_level2_quad_clean.evt
Size (bytes)539,435,52074,151,360
Size514.4 MB 70.7 MB
Events in quadrant A3,337,388456,489
Events in quadrant B3,288,771459,722
Events in quadrant C3,518,123447,364
Events in quadrant D5,752,016428,426

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138602
B0136901
C0139241
D0213941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65031081.660772%
B65031211.860680%
C6503640.984161%
D650383512.840228%

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 7424 6504 2 2 0.03% 0.03%
B 7424 6504 4 4 0.05% 0.06%
C 7424 6505 2 2 0.03% 0.03%
D 7424 6505 620 620 8.35% 9.53%

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 12 189 177843 1066.45 815 798 166.0
A 8 15 18715 107.93 815 798 166.0
A 0 226 7064 37.74 815 798 166.0
B 0 189 46949 295.69 806 787 156.1
B 0 214 29090 181.29 806 787 156.1
B 0 229 25572 158.76 806 787 156.1
C 3 233 471909 2606.54 778 783 180.7
C 14 234 11165 57.44 778 783 180.7
C 13 61 5455 25.85 778 783 180.7
D 5 222 1031425 5823.98 742 726 177.0
D 13 122 857671 4842.18 742 726 177.0
D 13 172 569743 3215.24 742 726 177.0

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