ASTROSAT CZTI

Data Quality Report

Orbit 12833

Creation date: 2024-06-27T16:32:54.805634
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_071T01_9000001888_12833cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12833cztM0_level2_quad_clean.evt
Size (bytes)489,614,40097,482,240
Size466.9 MB 93.0 MB
Events in quadrant A3,373,098626,825
Events in quadrant B4,556,071596,807
Events in quadrant C3,129,355633,756
Events in quadrant D3,293,203606,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145633
B0180772
C0142452
D0147742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7002721.028278%
B70025357.640674%
C7002490.699800%
D7002420.599829%

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 8712 7004 1 1 0.01% 0.01%
B 8712 7004 372 372 4.27% 5.31%
C 8712 7004 3 3 0.03% 0.04%
D 8712 7004 13 13 0.15% 0.19%

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 15 222 108942 641.34 825 808 168.6
A 12 189 88501 520.11 825 808 168.6
A 0 226 7423 39.23 825 808 168.6
B 4 239 1253281 8298.84 785 765 150.9
B 0 85 61937 405.31 785 765 150.9
B 0 219 53146 347.06 785 765 150.9
C 14 234 9034 44.27 800 802 185.9
C 13 61 5798 26.87 800 802 185.9
C 12 4 2874 11.14 800 802 185.9
D 8 195 81817 420.92 796 772 192.5
D 13 172 63218 324.32 796 772 192.5
D 2 136 60226 308.78 796 772 192.5

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