ASTROSAT CZTI

Data Quality Report

Orbit 18508

Creation date: 2024-06-27T17:51:08.326707
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_212T07_9000002746_18508cztM0_level2.evt modeM0/AS1A05_212T07_9000002746_18508cztM0_level2_quad_clean.evt
Size (bytes)447,379,20070,960,320
Size426.7 MB 67.7 MB
Events in quadrant A3,043,022428,821
Events in quadrant B3,137,013436,925
Events in quadrant C3,072,106424,865
Events in quadrant D3,868,464418,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131801
B0134181
C0131441
D0157581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301470.745913%
B6300631.000000%
C6300791.253968%
D63012794.427869%

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 7361 6301 0 0 0.00% 0.00%
B 7360 6300 7 7 0.10% 0.11%
C 7360 6300 1 1 0.01% 0.02%
D 7361 6301 228 228 3.10% 3.62%

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 9540 54.8 784 766 160.1
A 4 2 8111 45.88 784 766 160.1
A 0 226 7103 39.58 784 766 160.1
B 3 64 26664 171.76 784 766 150.8
B 12 111 17622 111.79 784 766 150.8
B 11 111 15197 95.71 784 766 150.8
C 14 238 117125 660.32 755 760 176.2
C 5 112 6290 31.38 755 760 176.2
C 13 61 5380 26.22 755 760 176.2
D 1 52 938217 5146.59 749 728 182.2
D 7 238 41376 223.15 749 728 182.2
D 13 168 30167 161.61 749 728 182.2

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