ASTROSAT CZTI

Data Quality Report

Orbit 36684

Creation date: 2024-06-27T21:30:14.951940
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_041T01_9000005234_36684cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36684cztM0_level2_quad_clean.evt
Size (bytes)464,808,960105,039,360
Size443.3 MB 100.2 MB
Events in quadrant A2,699,211706,752
Events in quadrant B3,705,025699,993
Events in quadrant C3,152,460715,589
Events in quadrant D4,138,957665,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116133
B0145842
C0127692
D0160262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561590.160285%
B56151422.528940%
C56151152.048085%
D56153205.699020%

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 7378 5616 0 0 0.00% 0.00%
B 7378 5616 90 90 1.22% 1.60%
C 7378 5616 86 86 1.17% 1.53%
D 7378 5616 272 272 3.69% 4.84%

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 218036 1701.24 634 621 127.8
A 13 6 13987 104.59 634 621 127.8
A 13 254 10777 79.47 634 621 127.8
B 0 189 872807 7414.08 622 605 117.6
B 5 255 250073 2120.58 622 605 117.6
B 4 232 40424 338.48 622 605 117.6
C 0 10 429018 3030.15 615 619 141.4
C 15 214 255179 1800.55 615 619 141.4
C 0 207 30862 213.91 615 619 141.4
D 12 227 462448 3134.92 609 593 147.3
D 2 153 314323 2129.5 609 593 147.3
D 2 137 162341 1097.89 609 593 147.3

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