ASTROSAT CZTI

Data Quality Report

Orbit 15952

Creation date: 2024-06-27T17:15:37.196290
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/AS1G08_081T01_9000002350_15952cztM0_level2.evt modeM0/AS1G08_081T01_9000002350_15952cztM0_level2_quad_clean.evt
Size (bytes)421,902,72088,994,880
Size402.4 MB 84.9 MB
Events in quadrant A3,144,523570,480
Events in quadrant B3,228,398586,888
Events in quadrant C3,093,042561,713
Events in quadrant D2,893,476546,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134053
B0135182
C0130092
D0128492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148721.171113%
B6148580.943396%
C6148681.106051%
D6148190.309044%

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 7414 6150 22 22 0.30% 0.36%
B 7414 6150 13 13 0.18% 0.21%
C 7414 6150 0 0 0.00% 0.00%
D 7414 6150 1 1 0.01% 0.02%

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 15 239 179944 1171.2 768 755 153.0
A 0 226 6738 39.11 768 755 153.0
A 12 194 5769 32.77 768 755 153.0
B 4 216 51105 346.23 772 753 145.4
B 5 65 32139 215.82 772 753 145.4
B 0 244 26460 176.77 772 753 145.4
C 14 238 114797 654.0 750 758 174.4
C 3 233 50426 284.84 750 758 174.4
C 13 61 5140 25.13 750 758 174.4
D 2 234 28816 155.16 752 730 181.0
D 13 104 14772 77.57 752 730 181.0
D 2 152 9129 46.4 752 730 181.0

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