ASTROSAT CZTI

Data Quality Report

Orbit 20911

Creation date: 2024-06-27T18:21:06.199162
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/AS1C04_001T01_9000003082_20911cztM0_level2.evt modeM0/AS1C04_001T01_9000003082_20911cztM0_level2_quad_clean.evt
Size (bytes)534,752,640149,489,280
Size510.0 MB 142.6 MB
Events in quadrant A3,815,5641,009,665
Events in quadrant B4,022,7771,004,888
Events in quadrant C3,637,669993,652
Events in quadrant D4,177,013965,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021151
B020747
C020847
D020636

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205
B0206
C0205
D0206

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213384541
B0223324799
C0208264521
D0242616017

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7984350.438377%
B7949710.893194%
C8017600.748410%
D79161672.109651%

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 12106 8410 18 18 0.15% 0.21%
B 12329 8356 12 12 0.10% 0.14%
C 12385 8428 0 0 0.00% 0.00%
D 12426 8291 111 111 0.89% 1.34%

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 198101 1067.92 925 907 184.7
A 5 16 32766 172.53 925 907 184.7
A 6 16 25279 131.99 925 907 184.7
B 7 220 258292 1478.38 916 895 174.1
B 0 219 52944 298.95 916 895 174.1
B 0 229 27117 150.61 916 895 174.1
C 14 238 141314 674.18 895 898 208.3
C 13 61 6153 25.23 895 898 208.3
C 10 91 4674 18.13 895 898 208.3
D 1 52 633840 2953.67 889 862 214.3
D 1 20 128007 593.3 889 862 214.3
D 2 234 35341 160.89 889 862 214.3

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