ASTROSAT CZTI

Data Quality Report

Orbit 14121

Creation date: 2024-06-27T16:50:31.510445
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/AS1A04_149T01_9000002082_14121cztM0_level2.evt modeM0/AS1A04_149T01_9000002082_14121cztM0_level2_quad_clean.evt
Size (bytes)427,942,08099,449,280
Size408.1 MB 94.8 MB
Events in quadrant A2,855,683654,898
Events in quadrant B3,309,130659,703
Events in quadrant C3,072,594642,982
Events in quadrant D3,303,874623,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125702
B0137711
C0128371
D0139251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6167550.891844%
B61671031.670180%
C6167490.794552%
D6167520.843198%

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 7013 6170 0 0 0.00% 0.00%
B 7013 6170 31 31 0.44% 0.50%
C 7013 6170 0 0 0.00% 0.00%
D 7013 6170 8 8 0.11% 0.13%

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 12 189 52173 348.67 726 708 147.6
A 12 96 8335 51.67 726 708 147.6
A 0 226 6530 39.44 726 708 147.6
B 0 85 295903 2126.2 728 710 138.8
B 0 189 69509 495.54 728 710 138.8
B 3 209 23735 165.84 728 710 138.8
C 3 233 297114 1808.2 709 711 163.9
C 10 22 5714 30.52 709 711 163.9
C 13 61 4975 26.01 709 711 163.9
D 1 52 396162 2332.46 704 686 169.6
D 2 152 109672 642.78 704 686 169.6
D 15 0 59903 349.25 704 686 169.6

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