ASTROSAT CZTI

Data Quality Report

Orbit 19568

Creation date: 2024-06-27T18:04:17.944153
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_005T01_9000002908_19568cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19568cztM0_level2_quad_clean.evt
Size (bytes)493,171,20072,679,680
Size470.3 MB 69.3 MB
Events in quadrant A3,180,611460,366
Events in quadrant B3,254,037469,191
Events in quadrant C3,240,195435,645
Events in quadrant D4,842,532404,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131052
B0133442
C0132122
D0186102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166340.551411%
B6166510.827116%
C6166460.746027%
D61662864.638339%

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 7441 6167 0 0 0.00% 0.00%
B 7441 6167 1 1 0.01% 0.02%
C 7441 6167 0 0 0.00% 0.00%
D 7441 6167 233 233 3.13% 3.78%

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 9 143 9331 51.73 822 809 164.7
A 13 254 9113 50.41 822 809 164.7
A 0 226 7101 38.19 822 809 164.7
B 0 198 23721 149.92 820 801 152.9
B 12 111 18321 114.6 820 801 152.9
B 11 111 16182 100.61 820 801 152.9
C 14 238 124135 690.05 774 781 178.8
C 3 233 62779 346.82 774 781 178.8
C 9 221 15153 80.4 774 781 178.8
D 12 218 833707 4516.53 767 748 184.4
D 2 16 451777 2445.6 767 748 184.4
D 1 52 435198 2355.71 767 748 184.4

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