ASTROSAT CZTI

Data Quality Report

Orbit 10951

Creation date: 2024-06-27T16:06:08.471369
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_037T01_9000001588_10951cztM0_level2.evt modeM0/AS1G08_037T01_9000001588_10951cztM0_level2_quad_clean.evt
Size (bytes)641,724,48064,134,720
Size612.0 MB 61.2 MB
Events in quadrant A4,839,161379,927
Events in quadrant B4,680,408387,052
Events in quadrant C2,977,124387,280
Events in quadrant D6,483,883319,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188663
B0182362
C0135812
D0239012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67191652.455723%
B67194336.444411%
C671950.074416%
D6719109616.311951%

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 7659 6720 91 91 1.19% 1.35%
B 7659 6720 258 258 3.37% 3.84%
C 7659 6720 0 0 0.00% 0.00%
D 7659 6719 856 856 11.18% 12.74%

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 8 15 1063096 6664.82 780 764 159.4
A 8 5 714440 4477.43 780 764 159.4
A 14 238 21514 130.18 780 764 159.4
B 4 239 1489691 9972.68 777 758 149.3
B 0 214 36642 240.35 777 758 149.3
B 6 51 36135 236.95 777 758 149.3
C 13 61 5589 26.98 763 766 178.7
C 8 222 2111 7.52 763 766 178.7
C 3 202 1836 5.99 763 766 178.7
D 1 52 2983962 17482.82 692 670 170.6
D 10 253 238294 1392.53 692 670 170.6
D 13 61 153804 897.4 692 670 170.6

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