ASTROSAT CZTI

Data Quality Report

Orbit 05255

Creation date: 2024-06-27T14:53:11.852946
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_240T02_9000000670_05255cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05255cztM0_level2_quad_clean.evt
Size (bytes)538,035,84070,819,200
Size513.1 MB 67.5 MB
Events in quadrant A2,847,665444,981
Events in quadrant B2,913,918451,896
Events in quadrant C2,978,750441,086
Events in quadrant D7,134,997375,383

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126705
B0127082
C0128452
D02545120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168350.567445%
B6169410.664613%
C6169320.518723%
D6165180829.326845%

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 7384 6171 0 0 0.00% 0.00%
B 7384 6171 0 0 0.00% 0.00%
C 7384 6171 0 0 0.00% 0.00%
D 7384 6170 1425 1425 19.30% 23.10%

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 50 18222 117.67 735 719 148.8
A 12 194 7262 43.99 735 719 148.8
A 0 226 7073 42.72 735 719 148.8
B 0 219 16618 111.05 743 724 143.1
B 12 111 13176 87.0 743 724 143.1
B 4 48 12070 79.28 743 724 143.1
C 1 16 143063 846.31 725 730 168.2
C 13 61 5858 30.49 725 730 168.2
C 8 222 2534 10.73 725 730 168.2
D 11 145 4629019 32410.95 584 568 142.8
D 8 195 149591 1043.54 584 568 142.8
D 2 136 66767 463.56 584 568 142.8

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