ASTROSAT CZTI

Data Quality Report

Orbit 04701

Creation date: 2024-06-27T14:45:47.931879
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_235T01_9000000590_04701cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04701cztM0_level2_quad_clean.evt
Size (bytes)708,019,20066,332,160
Size675.2 MB 63.3 MB
Events in quadrant A2,923,486440,279
Events in quadrant B3,195,802437,401
Events in quadrant C10,742,236273,118
Events in quadrant D4,152,496414,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132122
B0138141
C0360841
D0167651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6329520.821615%
B6329520.821615%
C6329316049.928899%
D63291983.128456%

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 7474 6330 13 13 0.17% 0.21%
B 7474 6330 7 7 0.09% 0.11%
C 7474 6330 2795 2795 37.40% 44.15%
D 7474 6330 117 117 1.57% 1.85%

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 0 118 68116 447.82 736 720 150.5
A 0 226 14824 93.71 736 720 150.5
A 12 194 7539 45.31 736 720 150.5
B 15 204 109077 757.57 746 727 143.0
B 10 16 71388 494.05 746 727 143.0
B 14 167 56375 389.09 746 727 143.0
C 9 68 8579451 67760.96 547 550 126.6
C 9 247 11034 82.81 547 550 126.6
C 12 4 9231 68.57 547 550 126.6
D 2 63 758927 4451.47 701 680 170.3
D 13 235 184989 1082.03 701 680 170.3
D 2 136 144668 845.32 701 680 170.3

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