ASTROSAT CZTI

Data Quality Report

Orbit 19285

Creation date: 2024-06-27T18:01:03.871673
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/AS1A05_107T01_9000002852_19285cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19285cztM0_level2_quad_clean.evt
Size (bytes)601,390,080121,893,120
Size573.5 MB 116.2 MB
Events in quadrant A4,038,346784,841
Events in quadrant B4,107,912803,255
Events in quadrant C4,159,177782,695
Events in quadrant D5,346,091745,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177354
B0178133
C0178693
D0216773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82682843.434930%
B82693834.631757%
C82694215.091305%
D82695016.058774%

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 8388 8271 1 1 0.01% 0.01%
B 8389 8271 1 1 0.01% 0.01%
C 8389 8271 0 0 0.00% 0.00%
D 8389 8272 312 312 3.72% 3.77%

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 12672 54.61 1043 1020 213.4
A 0 226 8987 37.34 1043 1020 213.4
A 3 137 8842 36.66 1043 1020 213.4
B 12 111 25722 121.77 1041 1010 202.9
B 11 111 22380 105.3 1041 1010 202.9
B 14 111 19778 92.48 1041 1010 202.9
C 14 238 153010 633.4 1011 1018 240.0
C 3 233 39079 158.61 1011 1018 240.0
C 8 128 12495 47.83 1011 1018 240.0
D 7 223 910093 3711.22 994 966 245.0
D 1 52 626299 2552.72 994 966 245.0
D 2 120 43090 171.96 994 966 245.0

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