ASTROSAT CZTI

Data Quality Report

Orbit 25488

Creation date: 2024-06-27T19:18:13.172389
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/AS1C05_012T07_9000003718_25488cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25488cztM0_level2_quad_clean.evt
Size (bytes)473,664,960135,221,760
Size451.7 MB 129.0 MB
Events in quadrant A3,128,242933,023
Events in quadrant B3,338,444950,917
Events in quadrant C3,159,973896,640
Events in quadrant D4,275,238860,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134390
B0141840
C0135540
D0170690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6530260.398162%
B6530400.612557%
C6530650.995406%
D65302423.705972%

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 7770 6531 0 0 0.00% 0.00%
B 7770 6531 0 0 0.00% 0.00%
C 7770 6531 0 0 0.00% 0.00%
D 7770 6531 198 198 2.55% 3.03%

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 9457 53.4 811 794 162.2
A 3 137 7083 38.77 811 794 162.2
A 0 226 6898 37.63 811 794 162.2
B 3 112 105383 694.22 812 793 150.7
B 3 64 24610 158.09 812 793 150.7
B 0 190 23669 151.84 812 793 150.7
C 14 238 127312 707.0 775 778 179.0
C 3 233 7878 39.67 775 778 179.0
C 13 61 5331 25.44 775 778 179.0
D 1 52 996003 5404.1 767 745 184.2
D 8 195 170899 923.91 767 745 184.2
D 12 233 75865 407.89 767 745 184.2

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