ASTROSAT CZTI

Data Quality Report

Orbit 16158

Creation date: 2024-06-27T17:18:47.521189
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_109T01_9000002386_16158cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16158cztM0_level2_quad_clean.evt
Size (bytes)586,005,12086,817,600
Size558.9 MB 82.8 MB
Events in quadrant A3,366,974567,378
Events in quadrant B3,543,053579,827
Events in quadrant C3,461,094555,932
Events in quadrant D6,898,257434,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148062
B0150521
C0149081
D0254701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7046450.638660%
B7046911.291513%
C70461041.476015%
D7046151121.444791%

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 7327 7048 2 2 0.03% 0.03%
B 7327 7048 7 7 0.10% 0.10%
C 7327 7048 0 0 0.00% 0.00%
D 7327 7048 1275 1275 17.40% 18.09%

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 15 174 57890 330.02 843 823 172.9
A 0 253 54632 311.18 843 823 172.9
A 8 247 8706 45.59 843 823 172.9
B 0 197 55423 337.14 846 826 161.9
B 4 142 26832 160.59 846 826 161.9
B 0 189 25218 150.62 846 826 161.9
C 3 233 159563 830.9 809 812 191.1
C 14 238 123212 640.64 809 812 191.1
C 8 128 10052 48.36 809 812 191.1
D 5 222 3631985 21547.5 683 662 168.5
D 1 52 570888 3383.6 683 662 168.5
D 10 70 86555 509.67 683 662 168.5

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