ASTROSAT CZTI

Data Quality Report

Orbit 29357

Creation date: 2024-06-27T20:03:10.332009
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_279T01_9000004218_29357cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29357cztM0_level2_quad_clean.evt
Size (bytes)675,434,88093,093,120
Size644.1 MB 88.8 MB
Events in quadrant A3,512,535609,209
Events in quadrant B3,950,776612,032
Events in quadrant C4,899,125577,328
Events in quadrant D7,628,734541,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144141
B0157841
C0195901
D0274401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6878971.410294%
B68791712.485826%
C68791802.616659%
D6879107415.612734%

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 7923 6879 0 0 0.00% 0.00%
B 7924 6880 44 44 0.56% 0.64%
C 7924 6880 0 0 0.00% 0.00%
D 7924 6880 829 829 10.46% 12.05%

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 13 254 13365 69.41 907 890 179.7
A 1 113 10103 51.26 907 890 179.7
A 3 137 7939 39.22 907 890 179.7
B 5 172 210683 1270.34 888 870 165.2
B 15 33 59756 356.53 888 870 165.2
B 0 229 45507 270.26 888 870 165.2
C 3 233 1360735 6806.08 865 872 199.8
C 14 238 137599 684.32 865 872 199.8
C 2 114 16699 79.21 865 872 199.8
D 1 52 3026256 15259.96 837 817 198.3
D 7 80 547145 2755.62 837 817 198.3
D 13 153 417207 2100.22 837 817 198.3

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