ASTROSAT CZTI

Data Quality Report

Orbit 12000

Creation date: 2024-06-27T16:21:06.702677
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/AS1G08_024T03_9000001774_12000cztM0_level2.evt modeM0/AS1G08_024T03_9000001774_12000cztM0_level2_quad_clean.evt
Size (bytes)528,554,880103,812,480
Size504.1 MB 99.0 MB
Events in quadrant A3,434,740695,275
Events in quadrant B4,376,776690,862
Events in quadrant C3,136,609694,189
Events in quadrant D4,611,958603,933

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147493
B0175082
C0137882
D0182682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6587911.381509%
B65874637.028997%
C6587580.880522%
D65876079.215121%

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 9198 6590 2 2 0.02% 0.03%
B 9198 6588 213 213 2.32% 3.23%
C 9198 6590 2 2 0.02% 0.03%
D 9198 6590 509 509 5.53% 7.72%

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 130423 791.44 807 791 163.8
A 1 178 69972 422.37 807 791 163.8
A 1 161 61248 369.11 807 791 163.8
B 4 239 745451 4999.43 795 775 149.0
B 3 64 264800 1772.55 795 775 149.0
B 15 204 99594 663.42 795 775 149.0
C 14 234 15846 83.08 794 799 181.1
C 8 128 9315 47.02 794 799 181.1
C 13 61 5947 28.42 794 799 181.1
D 10 199 1318305 7451.51 736 715 176.8
D 13 104 188622 1062.69 736 715 176.8
D 8 195 101055 567.46 736 715 176.8

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