ASTROSAT CZTI

Data Quality Report

Orbit 15545

Creation date: 2024-06-27T17:10:07.909719
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/AS1G08_030T01_9000002302_15545cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15545cztM0_level2_quad_clean.evt
Size (bytes)534,850,56073,563,840
Size510.1 MB 70.2 MB
Events in quadrant A3,715,815459,325
Events in quadrant B3,637,224461,761
Events in quadrant C3,565,073431,148
Events in quadrant D4,838,709421,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149573
B0146272
C0143342
D0185222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65081291.982176%
B65081332.043639%
C65081352.074370%
D65082553.918254%

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 7844 6509 21 21 0.27% 0.32%
B 7844 6509 2 2 0.03% 0.03%
C 7844 6509 3 3 0.04% 0.05%
D 7844 6509 180 180 2.29% 2.77%

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 0 253 157767 859.84 925 910 182.4
A 0 226 8322 40.63 925 910 182.4
A 12 194 6916 32.92 925 910 182.4
B 4 173 30887 175.3 911 892 171.1
B 4 48 23613 132.79 911 892 171.1
B 12 111 19270 107.41 911 892 171.1
C 14 238 137717 690.03 860 868 198.3
C 10 22 37307 183.73 860 868 198.3
C 3 233 21342 103.23 860 868 198.3
D 5 222 943493 4478.56 878 853 210.5
D 13 104 384960 1824.93 878 853 210.5
D 12 221 97230 457.9 878 853 210.5

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