ASTROSAT CZTI

Data Quality Report

Orbit 09587

Creation date: 2024-06-27T15:48:05.025260
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_238T01_9000001364_09587cztM0_level2.evt modeM0/AS1G05_238T01_9000001364_09587cztM0_level2_quad_clean.evt
Size (bytes)746,562,24086,209,920
Size712.0 MB 82.2 MB
Events in quadrant A4,284,819553,645
Events in quadrant B3,628,612559,909
Events in quadrant C3,290,879543,161
Events in quadrant D10,923,725457,721

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018388790
B016175597
C015292636
D0403063085

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01528
B015210
C01535
D015210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71542082.907464%
B71901261.752434%
C7167480.669736%
D6953282940.687473%

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 7753 7339 8 8 0.10% 0.11%
B 7753 7369 6 6 0.08% 0.08%
C 7753 7333 0 0 0.00% 0.00%
D 7753 7219 2248 2248 29.00% 31.14%

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 1 162 370314 2099.13 862 845 176.0
A 1 178 202704 1146.86 862 845 176.0
A 1 161 189526 1071.99 862 845 176.0
B 15 85 81755 479.1 873 850 168.9
B 4 80 77085 451.45 873 850 168.9
B 0 214 28824 165.66 873 850 168.9
C 13 61 6213 27.05 843 847 198.4
C 9 68 3394 12.84 843 847 198.4
C 3 202 2114 6.39 843 847 198.4
D 1 52 8036426 46359.05 709 691 173.3
D 8 195 113848 652.82 709 691 173.3
D 10 199 30605 172.58 709 691 173.3

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