ASTROSAT CZTI

Data Quality Report

Orbit 04880

Creation date: 2024-06-27T14:48:22.360691
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_237T01_9000000620_04880cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04880cztM0_level2_quad_clean.evt
Size (bytes)480,473,28073,892,160
Size458.2 MB 70.5 MB
Events in quadrant A3,028,664456,163
Events in quadrant B3,566,249454,864
Events in quadrant C3,000,928453,021
Events in quadrant D4,520,148426,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132002
B0146631
C0132011
D0178091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408570.889513%
B6408891.388889%
C6408450.702247%
D64083585.586767%

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 7273 6409 0 0 0.00% 0.00%
B 7273 6409 5 5 0.07% 0.08%
C 7273 6409 0 0 0.00% 0.00%
D 7273 6409 254 254 3.49% 3.96%

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 12 133 14078 82.52 778 764 161.3
A 8 15 9997 57.23 778 764 161.3
A 0 50 8643 48.84 778 764 161.3
B 4 80 298651 1967.64 786 769 151.4
B 15 204 150131 986.6 786 769 151.4
B 0 183 23054 147.2 786 769 151.4
C 9 247 23851 130.44 757 763 177.0
C 13 61 6253 31.02 757 763 177.0
C 14 67 4814 22.89 757 763 177.0
D 1 7 573338 3053.21 746 723 187.5
D 13 235 464299 2471.81 746 723 187.5
D 2 234 256005 1361.18 746 723 187.5

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