ASTROSAT CZTI

Data Quality Report

Orbit 22347

Creation date: 2024-06-27T18:39:44.432408
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/AS1T03_147T01_9000003306_22347cztM0_level2.evt modeM0/AS1T03_147T01_9000003306_22347cztM0_level2_quad_clean.evt
Size (bytes)486,112,320114,698,880
Size463.6 MB 109.4 MB
Events in quadrant A3,507,936753,312
Events in quadrant B3,619,800790,200
Events in quadrant C3,647,582733,349
Events in quadrant D3,469,762707,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148342
B0151032
C0151522
D0149102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7023390.555318%
B7024660.939636%
C7024891.267084%
D7024260.370159%

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 9508 7025 0 0 0.00% 0.00%
B 9509 7026 0 0 0.00% 0.00%
C 9509 7026 1 1 0.01% 0.01%
D 9509 7026 2 2 0.02% 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 13 254 8859 43.84 909 891 181.7
A 0 226 7831 38.19 909 891 181.7
A 3 137 7630 37.08 909 891 181.7
B 12 111 20653 115.57 922 900 170.9
B 11 111 18195 101.19 922 900 170.9
B 14 111 16729 92.61 922 900 170.9
C 14 238 142858 686.47 884 890 206.8
C 10 22 30319 142.3 884 890 206.8
C 0 10 25431 118.66 884 890 206.8
D 12 227 72828 338.95 882 859 212.3
D 1 52 40830 188.25 882 859 212.3
D 2 234 25204 114.66 882 859 212.3

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