ASTROSAT CZTI

Data Quality Report

Orbit 17042

Creation date: 2024-06-27T17:31:14.851063
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/AS1T03_038T01_9000002530_17042cztM0_level2.evt modeM0/AS1T03_038T01_9000002530_17042cztM0_level2_quad_clean.evt
Size (bytes)592,747,200112,708,800
Size565.3 MB 107.5 MB
Events in quadrant A3,635,874748,131
Events in quadrant B3,398,301761,929
Events in quadrant C5,718,396707,355
Events in quadrant D4,702,436685,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157931
B0150101
C0223301
D0189591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7321690.942494%
B7322320.437039%
C73221281.748156%
D73223885.299099%

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 7672 7323 30 30 0.39% 0.41%
B 7673 7324 2 2 0.03% 0.03%
C 7673 7324 0 0 0.00% 0.00%
D 7673 7324 285 285 3.71% 3.89%

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 15 174 295898 1720.65 842 821 171.5
A 0 254 67093 386.44 842 821 171.5
A 4 2 30353 172.21 842 821 171.5
B 4 216 31718 189.65 842 819 162.9
B 0 229 21835 128.99 842 819 162.9
B 12 111 19345 113.71 842 819 162.9
C 3 233 2463518 13181.78 799 801 186.8
C 14 238 123318 655.78 799 801 186.8
C 7 247 10111 49.83 799 801 186.8
D 1 52 1021915 5250.36 799 775 194.5
D 5 222 377316 1936.05 799 775 194.5
D 10 70 211225 1082.06 799 775 194.5

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