ASTROSAT CZTI

Data Quality Report

Orbit 17457

Creation date: 2024-06-27T17:36:47.028796
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_067T01_9000002582_17457cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17457cztM0_level2_quad_clean.evt
Size (bytes)499,855,68090,938,880
Size476.7 MB 86.7 MB
Events in quadrant A3,430,948592,499
Events in quadrant B4,051,948593,839
Events in quadrant C3,381,667559,702
Events in quadrant D3,832,034554,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140922
B0161442
C0139472
D0155452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506931.429450%
B65071482.274474%
C65071281.967112%
D65071442.213001%

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 7821 6507 0 0 0.00% 0.00%
B 7822 6508 24 24 0.31% 0.37%
C 7822 6508 0 0 0.00% 0.00%
D 7822 6508 54 54 0.69% 0.83%

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 6 16 80995 467.6 870 855 171.4
A 0 226 7852 40.83 870 855 171.4
A 12 194 6621 33.64 870 855 171.4
B 7 220 303051 1934.71 858 843 156.2
B 15 35 156509 996.56 858 843 156.2
B 4 216 64464 407.3 858 843 156.2
C 14 238 128870 683.88 819 826 187.2
C 3 233 23281 119.93 819 826 187.2
C 5 218 22502 115.77 819 826 187.2
D 13 232 263458 1298.18 841 818 202.3
D 13 189 188255 926.46 841 818 202.3
D 13 168 32987 159.0 841 818 202.3

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