ASTROSAT CZTI

Data Quality Report

Orbit 36896

Creation date: 2024-06-27T21:32:57.205413
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/AS1C07_010T01_9000005246_36896cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36896cztM0_level2_quad_clean.evt
Size (bytes)322,940,16072,089,280
Size308.0 MB 68.7 MB
Events in quadrant A2,778,255612,853
Events in quadrant B808,5279,349
Events in quadrant C2,804,410607,897
Events in quadrant D3,018,626575,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115963
B054082
C0114032
D0124482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5351190.355074%
B53515351100.000000%
C5351220.411138%
D5351841.569800%

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 8997 5354 9 9 0.10% 0.17%
B 8996 5350 0 0 0.00% 0.00%
C 8997 5354 10 10 0.11% 0.19%
D 8997 5354 81 81 0.90% 1.51%

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 226151 1740.94 643 632 129.5
A 9 143 34418 260.82 643 632 129.5
A 13 6 20470 153.14 643 632 129.5
B 12 243 743835 183164.9 11 11 4.1
B 12 144 13420 3301.93 11 11 4.1
B 5 255 1340 327.26 11 11 4.1
C 15 214 230482 1562.0 632 640 147.1
C 0 10 101978 688.69 632 640 147.1
C 1 157 6941 42.82 632 640 147.1
D 12 233 300538 1966.19 628 613 152.5
D 2 153 82151 534.53 628 613 152.5
D 2 250 50443 326.67 628 613 152.5

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