ASTROSAT CZTI

Data Quality Report

Orbit 07061

Creation date: 2024-06-27T15:15:04.876682
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/AS1A02_155T01_9000000966_07061cztM0_level2.evt modeM0/AS1A02_155T01_9000000966_07061cztM0_level2_quad_clean.evt
Size (bytes)835,827,840157,360,320
Size797.1 MB 150.1 MB
Events in quadrant A6,097,411970,976
Events in quadrant B5,893,0401,014,823
Events in quadrant C5,793,962995,803
Events in quadrant D6,704,957943,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263524
B0255623
C0254043
D0275053

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121592391.965622%
B12159600.493462%
C121591030.847109%
D121591090.896455%

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 15429 12162 170 170 1.10% 1.40%
B 15429 12162 2 2 0.01% 0.02%
C 15429 12162 51 51 0.33% 0.42%
D 15429 12162 78 78 0.51% 0.64%

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 15 234 490844 1680.07 1435 1405 291.3
A 8 15 45680 151.98 1435 1405 291.3
A 0 23 25186 81.63 1435 1405 291.3
B 0 214 139140 498.46 1466 1431 276.3
B 0 228 39188 136.67 1466 1431 276.3
B 12 111 26882 92.12 1466 1431 276.3
C 4 254 222306 672.04 1423 1434 328.7
C 13 61 10943 28.93 1423 1434 328.7
C 1 16 9513 24.58 1423 1434 328.7
D 8 195 748415 2188.7 1409 1369 341.3
D 12 233 355399 1037.24 1409 1369 341.3
D 5 239 111432 322.46 1409 1369 341.3

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