ASTROSAT CZTI

Data Quality Report

Orbit 20404

Creation date: 2024-06-27T18:14:59.733458
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_140T01_9000003016_20404cztM0_level2.evt modeM0/AS1A05_140T01_9000003016_20404cztM0_level2_quad_clean.evt
Size (bytes)405,564,48085,524,480
Size386.8 MB 81.6 MB
Events in quadrant A2,889,803554,003
Events in quadrant B3,008,239553,335
Events in quadrant C2,865,690528,147
Events in quadrant D3,100,910525,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125551
B0128381
C0124981
D0133031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137190.309598%
B6137270.439954%
C6138340.553926%
D6138240.391007%

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 7177 6138 2 2 0.03% 0.03%
B 7177 6138 2 2 0.03% 0.03%
C 7178 6139 0 0 0.00% 0.00%
D 7178 6139 18 18 0.25% 0.29%

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 17781 113.36 745 729 150.4
A 3 137 6532 38.58 745 729 150.4
A 0 226 6422 37.85 745 729 150.4
B 0 189 46054 319.25 739 721 142.0
B 10 245 28251 193.88 739 721 142.0
B 12 111 17311 116.83 739 721 142.0
C 14 238 110752 664.37 704 709 165.6
C 7 220 6380 34.24 704 709 165.6
C 13 61 4889 25.24 704 709 165.6
D 1 52 367950 2118.46 715 693 173.4
D 2 165 28654 161.29 715 693 173.4
D 2 234 25234 141.56 715 693 173.4

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