ASTROSAT CZTI

Data Quality Report

Orbit 09345

Creation date: 2024-06-27T15:44:44.897791
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_022T01_9000001322_09345cztM0_level2.evt modeM0/AS1G07_022T01_9000001322_09345cztM0_level2_quad_clean.evt
Size (bytes)436,921,92068,420,160
Size416.7 MB 65.3 MB
Events in quadrant A3,563,550420,077
Events in quadrant B2,787,469425,936
Events in quadrant C3,404,373408,174
Events in quadrant D3,086,365416,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164972235
B0141482059
C0170582890
D0156482335

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013616
B013915
C013818
D013822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57081432.505256%
B57401141.986063%
C56793205.634795%
D57531442.503042%

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 6423 5998 25 25 0.39% 0.42%
B 6406 6036 2 2 0.03% 0.03%
C 6380 5978 144 144 2.26% 2.41%
D 6412 6033 42 42 0.66% 0.70%

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 5 894501 6628.96 654 639 134.8
A 5 16 60859 446.6 654 639 134.8
A 1 162 39580 288.79 654 639 134.8
B 0 214 58497 447.77 663 646 129.2
B 0 219 38696 294.51 663 646 129.2
B 0 187 20587 154.34 663 646 129.2
C 4 254 933025 6412.13 624 625 145.4
C 10 22 17277 114.52 624 625 145.4
C 4 238 8832 56.44 624 625 145.4
D 8 195 252635 1499.11 639 622 168.1
D 1 52 167295 991.46 639 622 168.1
D 7 71 50358 295.86 639 622 168.1

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