ASTROSAT CZTI

Data Quality Report

Orbit 12551

Creation date: 2024-06-27T16:29:04.689188
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/AS1G06_067T01_9000001860_12551cztM0_level2.evt modeM0/AS1G06_067T01_9000001860_12551cztM0_level2_quad_clean.evt
Size (bytes)407,280,96090,267,840
Size388.4 MB 86.1 MB
Events in quadrant A2,995,879584,803
Events in quadrant B3,115,704601,442
Events in quadrant C2,809,046581,730
Events in quadrant D3,002,490543,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128052
B0131842
C0124872
D0131762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6052420.693985%
B6052711.173166%
C6052290.479180%
D6052600.991408%

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 7328 6054 1 1 0.01% 0.02%
B 7328 6054 2 2 0.03% 0.03%
C 7328 6054 0 0 0.00% 0.00%
D 7328 6054 36 36 0.49% 0.59%

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 1 162 77685 524.33 731 717 146.8
A 1 178 37462 250.32 731 717 146.8
A 1 161 32122 213.94 731 717 146.8
B 4 239 70823 509.57 740 723 137.6
B 0 205 62482 448.94 740 723 137.6
B 11 51 46415 332.14 740 723 137.6
C 3 233 16003 93.18 716 721 164.0
C 13 61 5232 27.5 716 721 164.0
C 3 202 1756 6.31 716 721 164.0
D 13 104 122786 738.81 699 679 165.3
D 8 195 70014 419.51 699 679 165.3
D 13 249 69980 419.31 699 679 165.3

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