ASTROSAT CZTI

Data Quality Report

Orbit 08249

Creation date: 2024-06-27T15:29:57.837190
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/AS1G07_086T01_9000001142_08249cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08249cztM0_level2_quad_clean.evt
Size (bytes)447,024,96077,158,080
Size426.3 MB 73.6 MB
Events in quadrant A3,209,002476,429
Events in quadrant B3,480,638480,244
Events in quadrant C3,145,776474,077
Events in quadrant D3,270,080461,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134633
B0141102
C0134882
D0140504

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365871.366850%
B63651011.586803%
C6365721.131186%
D6364871.367065%

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 7625 6365 0 0 0.00% 0.00%
B 7625 6365 12 12 0.16% 0.19%
C 7625 6365 2 2 0.03% 0.03%
D 7625 6365 14 14 0.18% 0.22%

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 13093 73.76 828 812 166.5
A 13 248 7819 42.08 828 812 166.5
A 0 226 7792 41.92 828 812 166.5
B 0 214 107296 690.23 831 813 154.3
B 11 51 81583 523.56 831 813 154.3
B 10 16 58659 374.96 831 813 154.3
C 5 128 9447 46.68 804 808 185.1
C 13 61 6302 29.69 804 808 185.1
C 3 202 2147 7.24 804 808 185.1
D 2 152 75393 356.49 799 779 209.3
D 8 230 57787 272.37 799 779 209.3
D 1 52 46757 219.67 799 779 209.3

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