ASTROSAT CZTI

Data Quality Report

Orbit 15427

Creation date: 2024-06-27T17:08:22.546286
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/AS1T02_080T01_9000002276_15427cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15427cztM0_level2_quad_clean.evt
Size (bytes)498,280,32071,945,280
Size475.2 MB 68.6 MB
Events in quadrant A3,433,966431,835
Events in quadrant B3,326,688443,197
Events in quadrant C4,274,318438,818
Events in quadrant D3,624,023420,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142320
B0138450
C0170520
D0149410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63671051.649128%
B6367821.287891%
C6367861.350715%
D63671011.586304%

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 7547 6367 21 21 0.28% 0.33%
B 7547 6367 0 0 0.00% 0.00%
C 7547 6367 2 2 0.03% 0.03%
D 7547 6367 52 52 0.69% 0.82%

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 14 238 127817 768.96 829 813 165.2
A 14 237 63712 380.83 829 813 165.2
A 15 69 32937 194.5 829 813 165.2
B 0 189 38320 239.39 831 811 156.7
B 4 142 17779 108.29 831 811 156.7
B 12 111 17672 107.61 831 811 156.7
C 3 233 1100865 5967.3 808 812 184.3
C 3 232 7341 35.42 808 812 184.3
C 14 225 7179 34.54 808 812 184.3
D 13 122 310009 1586.47 809 785 194.9
D 5 222 82824 420.9 809 785 194.9
D 10 70 66611 337.72 809 785 194.9

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