ASTROSAT CZTI

Data Quality Report

Orbit 18586

Creation date: 2024-06-27T17:51:56.230210
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/AS1A05_072T02_9000002762_18586cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18586cztM0_level2_quad_clean.evt
Size (bytes)452,370,240107,032,320
Size431.4 MB 102.1 MB
Events in quadrant A3,128,753698,291
Events in quadrant B3,248,202727,437
Events in quadrant C3,252,117708,650
Events in quadrant D3,653,884678,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131262
B0135463
C0134612
D0148992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138390.635386%
B6137761.238390%
C6137921.499104%
D61371642.672315%

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 7463 6139 0 0 0.00% 0.00%
B 7462 6138 0 0 0.00% 0.00%
C 7462 6138 0 0 0.00% 0.00%
D 7462 6138 94 94 1.26% 1.53%

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 10891 62.18 808 794 162.4
A 13 210 7807 43.18 808 794 162.4
A 0 226 7076 38.68 808 794 162.4
B 0 230 31565 199.52 820 801 154.2
B 12 111 17879 110.76 820 801 154.2
B 11 111 15579 95.84 820 801 154.2
C 14 238 124399 665.86 801 810 185.6
C 13 61 5673 26.2 801 810 185.6
C 4 254 3087 12.27 801 810 185.6
D 1 52 476218 2497.87 792 774 190.3
D 7 238 83999 437.25 792 774 190.3
D 5 222 57004 295.42 792 774 190.3

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