ASTROSAT CZTI

Data Quality Report

Orbit 07250

Creation date: 2024-06-27T15:17:20.590579
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/AS1G05_246T03_9000000990_07250cztM0_level2.evt modeM0/AS1G05_246T03_9000000990_07250cztM0_level2_quad_clean.evt
Size (bytes)443,324,16099,198,720
Size422.8 MB 94.6 MB
Events in quadrant A3,178,537639,633
Events in quadrant B3,128,887664,260
Events in quadrant C2,957,063656,001
Events in quadrant D3,744,871616,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134373
B0135252
C0129762
D0155522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136781.271186%
B6136590.961538%
C6136290.472621%
D61361782.900913%

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 7451 6137 9 9 0.12% 0.15%
B 7451 6136 2 2 0.03% 0.03%
C 7451 6137 1 1 0.01% 0.02%
D 7451 6136 75 75 1.01% 1.22%

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 197101 1292.93 750 734 151.9
A 8 15 89784 586.33 750 734 151.9
A 0 226 7582 45.09 750 734 151.9
B 0 214 94218 644.23 766 750 145.1
B 4 81 21102 140.28 766 750 145.1
B 0 219 17659 116.55 766 750 145.1
C 9 243 40365 231.49 743 748 171.1
C 12 4 10242 55.47 743 748 171.1
C 9 68 6298 32.43 743 748 171.1
D 2 216 345553 1967.8 727 706 175.2
D 13 169 224285 1275.81 727 706 175.2
D 2 14 150063 852.28 727 706 175.2

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