ASTROSAT CZTI

Data Quality Report

Orbit 12692

Creation date: 2024-06-27T16:31:08.181112
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/AS1A04_174T01_9000001876_12692cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12692cztM0_level2_quad_clean.evt
Size (bytes)510,874,560106,358,400
Size487.2 MB 101.4 MB
Events in quadrant A3,102,276750,196
Events in quadrant B5,868,705621,458
Events in quadrant C3,011,180728,918
Events in quadrant D3,085,003703,764

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128052
B0213881
C0127201
D0130321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5966901.508548%
B5966121520.365404%
C5966691.156554%
D5966801.340932%

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 7152 5968 0 0 0.00% 0.00%
B 7152 5968 956 956 13.37% 16.02%
C 7152 5968 1 1 0.01% 0.02%
D 7152 5968 2 2 0.03% 0.03%

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 12 189 64896 405.99 781 768 158.0
A 8 15 34895 216.06 781 768 158.0
A 0 226 6946 39.11 781 768 158.0
B 4 239 2988114 23179.8 680 668 128.9
B 11 51 99047 763.33 680 668 128.9
B 3 209 24345 183.71 680 668 128.9
C 15 208 99531 576.45 744 750 171.4
C 14 234 6865 35.68 744 750 171.4
C 13 61 5501 27.73 744 750 171.4
D 1 52 110871 607.17 752 735 181.4
D 10 157 67274 366.83 752 735 181.4
D 2 234 24325 130.05 752 735 181.4

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