ASTROSAT CZTI

Data Quality Report

Orbit 24507

Creation date: 2024-06-27T19:06:42.465736
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/AS1T03_183T01_9000003606_24507cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24507cztM0_level2_quad_clean.evt
Size (bytes)590,754,240119,237,760
Size563.4 MB 113.7 MB
Events in quadrant A3,957,738810,422
Events in quadrant B4,245,931830,128
Events in quadrant C3,493,670788,654
Events in quadrant D5,761,347736,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158882
B0167736
C0145022
D0215412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63784066.365632%
B63772914.563274%
C63771151.803356%
D63774527.087972%

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 7618 6379 191 191 2.51% 2.99%
B 7617 6378 120 120 1.58% 1.88%
C 7617 6378 45 45 0.59% 0.71%
D 7617 6378 350 350 4.59% 5.49%

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 14 111 898578 5784.66 774 761 155.2
A 4 2 76003 484.79 774 761 155.2
A 13 254 10086 60.08 774 761 155.2
B 3 64 1108251 7585.99 784 768 146.0
B 5 172 29287 195.35 784 768 146.0
B 10 249 28441 189.55 784 768 146.0
C 2 16 243431 1392.79 755 759 174.2
C 10 9 180016 1028.83 755 759 174.2
C 14 238 122659 699.63 755 759 174.2
D 1 52 1675869 9516.18 737 717 176.0
D 8 195 968383 5497.11 737 717 176.0
D 9 1 232777 1318.28 737 717 176.0

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