ASTROSAT CZTI

Data Quality Report

Orbit 15144

Creation date: 2024-06-27T17:04:18.798383
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/AS1A04_218T03_9000002232_15144cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15144cztM0_level2_quad_clean.evt
Size (bytes)516,150,72090,642,240
Size492.2 MB 86.4 MB
Events in quadrant A3,892,179556,914
Events in quadrant B3,832,104571,339
Events in quadrant C3,618,120568,508
Events in quadrant D3,791,489537,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159921
B0159230
C0153110
D0162900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73253134.273038%
B73253835.228669%
C73252423.303754%
D73253875.283276%

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 7326 7326 0 0 0.00% 0.00%
B 7326 7326 49 49 0.67% 0.67%
C 7326 7326 0 0 0.00% 0.00%
D 7326 7326 103 103 1.41% 1.41%

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 15 239 385623 2084.16 900 875 184.6
A 12 189 20438 105.97 900 875 184.6
A 1 162 12481 62.87 900 875 184.6
B 3 64 191889 1104.62 893 868 172.9
B 10 246 70611 403.3 893 868 172.9
B 12 111 21205 117.6 893 868 172.9
C 3 233 178747 864.78 882 885 205.7
C 13 61 6345 26.55 882 885 205.7
C 7 247 2613 8.4 882 885 205.7
D 5 222 226561 1043.07 881 854 216.4
D 7 223 133078 611.05 881 854 216.4
D 10 70 70413 321.46 881 854 216.4

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