ASTROSAT CZTI

Data Quality Report

Orbit 25930

Creation date: 2024-06-27T19:22:57.384266
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_214T01_9000003758_25930cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25930cztM0_level2_quad_clean.evt
Size (bytes)726,318,72094,000,320
Size692.7 MB 89.6 MB
Events in quadrant A11,707,150452,141
Events in quadrant B3,170,223661,283
Events in quadrant C3,164,590630,906
Events in quadrant D3,494,920628,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394470
B0139480
C0138210
D0153420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727398959.298350%
B6793360.529957%
C6799510.750110%
D6787841.237660%

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 7251 6739 3495 3495 48.20% 51.86%
B 7331 6827 0 0 0.00% 0.00%
C 7373 6833 0 0 0.00% 0.00%
D 7334 6816 47 47 0.64% 0.69%

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 0 13 9520807 83483.61 564 551 114.0
A 12 16 9887 81.87 564 551 114.0
A 13 254 7750 63.13 564 551 114.0
B 0 245 25128 161.7 789 770 150.6
B 0 190 20755 132.67 789 770 150.6
B 12 111 18624 118.52 789 770 150.6
C 14 238 120350 673.46 756 759 177.6
C 3 233 74149 413.29 756 759 177.6
C 8 128 10381 54.19 756 759 177.6
D 7 80 383625 2096.68 760 738 182.6
D 1 52 197497 1077.45 760 738 182.6
D 2 234 28277 150.8 760 738 182.6

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