ASTROSAT CZTI

Data Quality Report

Orbit 19758

Creation date: 2024-06-27T18:06:38.370481
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_022T08_9000002950_19758cztM0_level2.evt modeM0/AS1A05_022T08_9000002950_19758cztM0_level2_quad_clean.evt
Size (bytes)501,166,08089,879,040
Size477.9 MB 85.7 MB
Events in quadrant A3,139,344594,269
Events in quadrant B3,269,258612,081
Events in quadrant C3,561,426568,966
Events in quadrant D4,794,200520,473

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130253
B0133392
C0144982
D0183862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100530.868852%
B6100861.409836%
C61001041.704918%
D61004026.590164%

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 7450 6101 3 3 0.04% 0.05%
B 7450 6101 15 15 0.20% 0.25%
C 7450 6101 0 0 0.00% 0.00%
D 7450 6101 297 297 3.99% 4.87%

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 4 2 42116 255.56 801 788 161.7
A 6 16 9832 55.93 801 788 161.7
A 0 226 6963 38.18 801 788 161.7
B 7 220 62206 406.97 806 788 150.9
B 0 197 34324 222.22 806 788 150.9
B 12 111 17651 111.74 806 788 150.9
C 3 233 457791 2565.14 765 772 178.2
C 14 238 120890 674.19 765 772 178.2
C 13 61 5402 25.99 765 772 178.2
D 1 52 1296039 7057.65 746 726 183.5
D 12 233 285761 1553.04 746 726 183.5
D 12 218 178167 966.81 746 726 183.5

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