ASTROSAT CZTI

Data Quality Report

Orbit 08754

Creation date: 2024-06-27T15:36:45.850886
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/AS1A03_038T01_9000001218_08754cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08754cztM0_level2_quad_clean.evt
Size (bytes)479,954,88092,396,160
Size457.7 MB 88.1 MB
Events in quadrant A3,444,425587,858
Events in quadrant B3,388,465593,892
Events in quadrant C3,329,770583,095
Events in quadrant D3,910,070558,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147443
B0144782
C0143422
D0162342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68121432.099237%
B68121221.790957%
C68121061.556078%
D68121992.921315%

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 9007 6812 14 14 0.16% 0.21%
B 9007 6812 0 0 0.00% 0.00%
C 9007 6812 0 0 0.00% 0.00%
D 9007 6812 89 89 0.99% 1.31%

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 5 16 65179 366.11 871 853 175.7
A 13 248 26093 143.65 871 853 175.7
A 0 226 8143 41.49 871 853 175.7
B 12 111 18288 105.02 868 846 166.1
B 11 111 14713 83.49 868 846 166.1
B 14 111 10912 60.61 868 846 166.1
C 14 64 24341 119.61 846 851 196.4
C 13 61 6358 28.04 846 851 196.4
C 8 222 3129 11.6 846 851 196.4
D 2 152 351904 1676.94 837 815 209.4
D 1 52 148992 707.75 837 815 209.4
D 13 122 114341 542.24 837 815 209.4

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