ASTROSAT CZTI

Data Quality Report

Orbit 27648

Creation date: 2024-06-27T19:42:34.073159
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/AS1T03_257T01_9000003976_27648cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27648cztM0_level2_quad_clean.evt
Size (bytes)485,991,36084,021,120
Size463.5 MB 80.1 MB
Events in quadrant A3,396,995540,746
Events in quadrant B3,590,653559,259
Events in quadrant C3,207,023522,699
Events in quadrant D4,099,954485,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139500
B0144680
C0131940
D0163680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6248400.640205%
B6248931.488476%
C6248620.992318%
D62482714.337388%

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 7613 6249 1 1 0.01% 0.02%
B 7613 6249 14 14 0.18% 0.22%
C 7613 6248 0 0 0.00% 0.00%
D 7613 6249 237 237 3.11% 3.79%

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 6 16 243456 1507.16 814 803 161.0
A 8 192 11582 66.95 814 803 161.0
A 13 254 10488 60.16 814 803 161.0
B 10 245 205037 1335.33 822 804 152.9
B 5 255 70340 454.65 822 804 152.9
B 15 33 33776 215.58 822 804 152.9
C 14 238 128830 691.57 788 795 185.1
C 2 16 6728 32.05 788 795 185.1
C 13 61 5292 24.29 788 795 185.1
D 1 52 827780 4570.35 760 742 181.0
D 11 176 164410 904.46 760 742 181.0
D 7 80 85687 469.42 760 742 181.0

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