ASTROSAT CZTI

Data Quality Report

Orbit 01046

Creation date: 2024-06-27T14:06:40.415210
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/AS1P01_998T02_9000000190_01046cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01046cztM0_level2_quad_clean.evt
Size (bytes)1,237,979,520126,293,760
Size1.2 GB 120.4 MB
Events in quadrant A8,922,312840,128
Events in quadrant B9,442,232846,350
Events in quadrant C9,586,873815,146
Events in quadrant D9,045,845802,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318241
B0333091
C0338014
D0321851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7482100.133654%
B7482320.427693%
C7481180.240610%
D7482761.015771%

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 7637 7483 320 320 4.19% 4.28%
B 7637 7483 427 427 5.59% 5.71%
C 7636 7482 527 527 6.90% 7.04%
D 7637 7483 577 577 7.56% 7.71%

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 26587 43.51 2317 2330 557.5
A 11 79 8968 11.91 2317 2330 557.5
A 3 111 6939 8.27 2317 2330 557.5
B 8 234 66150 111.67 2413 2415 570.7
B 15 22 55623 93.23 2413 2415 570.7
B 5 249 53841 90.11 2413 2415 570.7
C 8 208 406188 648.6 2227 2307 622.7
C 15 241 377130 601.94 2227 2307 622.7
C 3 79 48949 74.9 2227 2307 622.7
D 1 83 398726 615.7 2210 2260 643.9
D 12 22 241129 370.96 2210 2260 643.9
D 10 125 78393 118.23 2210 2260 643.9

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