ASTROSAT CZTI

Data Quality Report

Orbit 24495

Creation date: 2024-06-27T19:06:34.683489
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_183T01_9000003606_24495cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24495cztM0_level2_quad_clean.evt
Size (bytes)622,929,600135,590,400
Size594.1 MB 129.3 MB
Events in quadrant A5,558,758882,873
Events in quadrant B4,375,814931,656
Events in quadrant C3,710,190888,415
Events in quadrant D4,688,392857,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217913
B0181583
C0161953
D0192573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78546998.899924%
B78542393.043035%
C78551261.604074%
D78552272.889879%

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 8929 7857 308 308 3.45% 3.92%
B 8929 7857 58 58 0.65% 0.74%
C 8930 7858 2 2 0.02% 0.03%
D 8930 7858 129 129 1.44% 1.64%

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 14 111 2088232 11629.95 897 878 179.5
A 13 254 11620 59.85 897 878 179.5
A 4 2 8232 40.97 897 878 179.5
B 3 64 613680 3498.5 928 904 175.2
B 5 172 79702 449.88 928 904 175.2
B 6 36 37454 208.67 928 904 175.2
C 14 238 144603 691.08 892 895 207.9
C 2 16 79995 380.38 892 895 207.9
C 3 233 8422 36.2 892 895 207.9
D 12 218 675904 3119.88 889 860 216.4
D 1 52 388739 1792.68 889 860 216.4
D 9 1 141773 651.26 889 860 216.4

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