ASTROSAT CZTI

Data Quality Report

Orbit 04357

Creation date: 2024-06-27T14:40:49.513725
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_219T01_9000000540_04357cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04357cztM0_level2_quad_clean.evt
Size (bytes)643,835,52073,644,480
Size614.0 MB 70.2 MB
Events in quadrant A3,311,796505,731
Events in quadrant B2,937,787507,551
Events in quadrant C9,961,754334,524
Events in quadrant D2,903,635485,417

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136122
B0121891
C0333821
D0123191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56541923.395826%
B5654841.485674%
C5654321756.897771%
D5654871.538734%

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 6919 5654 74 74 1.07% 1.31%
B 6919 5654 1 1 0.01% 0.02%
C 6919 5654 3047 3047 44.04% 53.89%
D 6919 5654 16 16 0.23% 0.28%

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 13 251 337656 2353.47 697 682 143.2
A 0 13 177722 1236.47 697 682 143.2
A 15 234 46748 321.73 697 682 143.2
B 14 167 105728 784.36 697 682 133.9
B 15 204 88164 653.21 697 682 133.9
B 15 54 23871 173.15 697 682 133.9
C 9 247 8094571 76148.91 456 457 106.3
C 12 4 68622 641.29 456 457 106.3
C 8 128 5985 52.01 456 457 106.3
D 2 136 84052 518.03 675 659 161.0
D 10 187 41147 251.51 675 659 161.0
D 13 239 39505 241.31 675 659 161.0

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