ASTROSAT CZTI

Data Quality Report

Orbit 00880

Creation date: 2024-06-27T14:04:17.453450
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_999T99_9000000144_00880cztM0_level2.evt modeM0/AS1P01_999T99_9000000144_00880cztM0_level2_quad_clean.evt
Size (bytes)198,383,04015,016,320
Size189.2 MB 14.3 MB
Events in quadrant A1,413,53897,781
Events in quadrant B1,658,33497,631
Events in quadrant C1,613,24995,161
Events in quadrant D1,261,43893,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048251
B055661
C054311
D043791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A884687.692308%
B88410511.877828%
C884778.710407%
D884586.561086%

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 1849 884 153 153 8.27% 17.31%
B 1849 884 285 285 15.41% 32.24%
C 1849 884 255 255 13.79% 28.85%
D 1849 884 111 111 6.00% 12.56%

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 11 79 1526 12.37 368 372 93.3
A 3 111 1323 10.19 368 372 93.3
A 14 203 945 6.14 368 372 93.3
B 8 38 257535 2909.26 355 356 88.4
B 0 220 38031 426.19 355 356 88.4
B 7 221 6842 73.37 355 356 88.4
C 9 83 328658 3445.75 326 337 95.3
C 7 159 4971 48.63 326 337 95.3
C 3 111 2790 25.74 326 337 95.3
D 1 4 5283 45.89 334 342 107.7
D 11 131 4955 42.84 334 342 107.7
D 10 125 2474 19.8 334 342 107.7

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