ASTROSAT CZTI

Data Quality Report

Orbit 30152

Creation date: 2024-06-27T20:11:33.770297
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/AS1A10_097T03_9000004336_30152cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30152cztM0_level2_quad_clean.evt
Size (bytes)749,885,760102,608,640
Size715.1 MB 97.9 MB
Events in quadrant A3,349,186690,956
Events in quadrant B5,168,541700,218
Events in quadrant C9,965,683591,859
Events in quadrant D3,801,256683,958

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137242
B0195252
C0340392
D0153442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6296761.207116%
B62961492.366582%
C6296288245.775095%
D6295610.969023%

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 7576 6297 11 11 0.15% 0.17%
B 7576 6297 1 1 0.01% 0.02%
C 7576 6296 1930 1930 25.48% 30.65%
D 7575 6296 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 0 13 79267 472.09 841 825 166.2
A 8 192 26659 155.48 841 825 166.2
A 13 254 12487 70.19 841 825 166.2
B 6 159 1803171 11543.57 834 813 156.1
B 0 190 37670 236.06 834 813 156.1
B 0 229 32175 200.86 834 813 156.1
C 3 233 7020665 42335.82 716 724 165.8
C 14 238 122503 734.42 716 724 165.8
C 14 254 16763 96.73 716 724 165.8
D 12 227 352025 1741.14 834 818 201.7
D 8 195 182670 901.54 834 818 201.7
D 2 250 29292 141.16 834 818 201.7

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