ASTROSAT CZTI

Data Quality Report

Orbit 32221

Creation date: 2024-06-27T20:37:44.930203
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/AS1A10_057T01_9000004692_32221cztM0_level2.evt modeM0/AS1A10_057T01_9000004692_32221cztM0_level2_quad_clean.evt
Size (bytes)606,928,320103,783,680
Size578.8 MB 99.0 MB
Events in quadrant A3,250,144693,783
Events in quadrant B5,579,595699,030
Events in quadrant C3,891,638682,694
Events in quadrant D5,244,770639,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136093
B0209412
C0156202
D0197712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135370.603097%
B61353075.004075%
C61355989.747351%
D61354747.726161%

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 7505 6136 0 0 0.00% 0.00%
B 7505 6135 110 110 1.47% 1.79%
C 7505 6136 38 38 0.51% 0.62%
D 7504 6135 236 236 3.14% 3.85%

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 13 254 12617 71.83 835 818 164.3
A 2 79 11180 63.08 835 818 164.3
A 13 6 11141 62.84 835 818 164.3
B 6 159 1775305 11570.28 828 810 153.4
B 4 80 226364 1470.69 828 810 153.4
B 5 172 178077 1155.84 828 810 153.4
C 14 238 284037 1536.36 799 808 184.4
C 14 254 211665 1143.79 799 808 184.4
C 0 10 171358 925.14 799 808 184.4
D 8 195 1417966 7519.28 792 773 188.5
D 13 249 315745 1671.16 792 773 188.5
D 7 238 224156 1185.22 792 773 188.5

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