ASTROSAT CZTI

Data Quality Report

Orbit 18238

Creation date: 2024-06-27T17:47:11.799920
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/AS1C04_001T01_9000002716_18238cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18238cztM0_level2_quad_clean.evt
Size (bytes)12,323,5204,060,800
Size11.8 MB 3.9 MB
Events in quadrant A91,96326,807
Events in quadrant B91,10626,911
Events in quadrant C89,10724,658
Events in quadrant D87,36625,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03811
B03851
C03721
D03671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14185.673759%
B14153.546099%
C14164.255319%
D14121.418440%

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 141 141 0 0 0.00% 0.00%
B 141 141 0 0 0.00% 0.00%
C 141 141 0 0 0.00% 0.00%
D 141 141 0 0 0.00% 0.00%

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 11 29 529 74.18 23 22 6.8
A 2 242 415 57.5 23 22 6.8
A 4 2 256 34.24 23 22 6.8
B 12 111 440 65.7 23 22 6.4
B 11 111 431 64.29 23 22 6.4
B 14 111 413 61.46 23 22 6.4
C 14 238 3760 559.28 21 21 6.7
C 7 174 1248 183.53 21 21 6.7
C 1 16 239 32.61 21 21 6.7
D 3 238 2114 282.74 22 21 7.4
D 3 254 917 121.04 22 21 7.4
D 1 52 288 36.07 22 21 7.4

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