ASTROSAT CZTI

Data Quality Report

Orbit 04815

Creation date: 2024-06-27T14:47:23.871617
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/AS1G05_142T01_9000000610_04815cztM0_level2.evt modeM0/AS1G05_142T01_9000000610_04815cztM0_level2_quad_clean.evt
Size (bytes)474,347,52074,036,160
Size452.4 MB 70.6 MB
Events in quadrant A3,798,526440,967
Events in quadrant B3,276,846456,660
Events in quadrant C2,938,416459,460
Events in quadrant D3,913,816434,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155171
B0137960
C0131430
D0160400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64433445.339128%
B6443831.288220%
C6443400.620829%
D64431993.088623%

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 7433 6443 213 213 2.87% 3.31%
B 7433 6443 26 26 0.35% 0.40%
C 7433 6444 0 0 0.00% 0.00%
D 7433 6443 122 122 1.64% 1.89%

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 13 251 766551 4923.19 755 739 155.6
A 8 15 104754 668.68 755 739 155.6
A 13 6 12264 74.09 755 739 155.6
B 10 16 160111 1060.27 775 757 150.3
B 15 54 58588 384.78 775 757 150.3
B 4 80 48928 320.51 775 757 150.3
C 12 4 14172 77.91 746 751 172.3
C 9 247 10199 54.84 746 751 172.3
C 13 61 6093 31.01 746 751 172.3
D 13 235 462543 2568.44 740 717 179.8
D 12 79 148831 823.73 740 717 179.8
D 10 172 134601 744.59 740 717 179.8

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