ASTROSAT CZTI

Data Quality Report

Orbit 20267

Creation date: 2024-06-27T18:13:15.163354
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/AS1A05_175T01_9000003004_20267cztM0_level2.evt modeM0/AS1A05_175T01_9000003004_20267cztM0_level2_quad_clean.evt
Size (bytes)523,604,16095,022,720
Size499.3 MB 90.6 MB
Events in quadrant A4,275,210604,462
Events in quadrant B3,896,684611,486
Events in quadrant C3,451,513585,982
Events in quadrant D3,751,029580,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170242
B0158692
C0146472
D0157572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71172513.526767%
B71171752.458901%
C71171151.615849%
D71171081.517493%

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 7932 7118 70 70 0.88% 0.98%
B 7932 7118 54 54 0.68% 0.76%
C 7932 7118 0 0 0.00% 0.00%
D 7932 7118 41 41 0.52% 0.58%

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 14 238 735188 4119.14 885 866 178.3
A 14 254 55342 305.58 885 866 178.3
A 8 205 32639 178.23 885 866 178.3
B 4 142 229900 1365.8 882 859 167.7
B 7 220 154542 916.43 882 859 167.7
B 12 111 20465 116.91 882 859 167.7
C 14 238 134840 679.65 844 848 197.1
C 3 9 10297 47.93 844 848 197.1
C 0 207 10024 46.54 844 848 197.1
D 11 176 230067 1093.1 863 838 209.7
D 7 238 96701 457.13 863 838 209.7
D 1 52 85636 404.37 863 838 209.7

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