ASTROSAT CZTI

Data Quality Report

Orbit 21215

Creation date: 2024-06-27T18:25:05.009039
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/AS1A06_005T05_9000003136_21215cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21215cztM0_level2_quad_clean.evt
Size (bytes)614,741,760108,129,600
Size586.3 MB 103.1 MB
Events in quadrant A4,796,958681,135
Events in quadrant B3,823,506716,424
Events in quadrant C3,819,513688,097
Events in quadrant D5,666,413664,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190052
B0161232
C0161992
D0218302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75405146.816976%
B75401011.339523%
C75401602.122016%
D75407079.376658%

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 9490 7540 347 347 3.66% 4.60%
B 9490 7540 1 1 0.01% 0.01%
C 9490 7540 0 0 0.00% 0.00%
D 9490 7540 521 521 5.49% 6.91%

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 15 236 672818 3551.26 936 919 189.2
A 5 16 436199 2300.63 936 919 189.2
A 11 47 84298 440.69 936 919 189.2
B 0 197 23666 125.64 952 930 181.0
B 12 111 21763 115.12 952 930 181.0
B 3 64 21019 111.01 952 930 181.0
C 14 238 143159 662.24 912 918 214.8
C 3 233 114085 526.87 912 918 214.8
C 0 207 7096 28.76 912 918 214.8
D 1 52 984585 4493.69 893 867 218.9
D 13 174 448796 2046.17 893 867 218.9
D 7 238 324325 1477.58 893 867 218.9

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