ASTROSAT CZTI

Data Quality Report

Orbit 00421

Creation date: 2024-06-27T13:59:32.079127
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/AS1P01_044T01_9000000072_00421cztM0_level2.evt modeM0/AS1P01_044T01_9000000072_00421cztM0_level2_quad_clean.evt
Size (bytes)801,570,24072,717,120
Size764.4 MB 69.3 MB
Events in quadrant A6,226,652463,063
Events in quadrant B6,079,291468,800
Events in quadrant C5,403,695464,128
Events in quadrant D6,226,206447,996

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220893
B0216732
C0196882
D0221492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510790.176229%
B510750.097905%
C510730.058743%
D5107380.744077%

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 7172 5108 134 134 1.87% 2.62%
B 7172 5108 76 76 1.06% 1.49%
C 7172 5108 43 43 0.60% 0.84%
D 7172 5108 273 273 3.81% 5.34%

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 0 238 105355 300.24 1558 1549 345.7
A 12 243 74402 210.72 1558 1549 345.7
A 15 4 8021 18.72 1558 1549 345.7
B 2 32 26327 68.22 1542 1553 363.2
B 15 185 22670 58.15 1542 1553 363.2
B 8 4 18533 46.76 1542 1553 363.2
C 9 206 36393 91.85 1356 1400 381.0
C 9 85 13423 31.56 1356 1400 381.0
C 0 207 9929 22.39 1356 1400 381.0
D 13 7 552121 1323.04 1328 1376 416.3
D 1 5 104334 247.33 1328 1376 416.3
D 1 4 84897 200.64 1328 1376 416.3

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