ASTROSAT CZTI

Data Quality Report

Orbit 00571

Creation date: 2024-06-27T13:59:52.152197
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_014T01_9000000080_00571cztM0_level2.evt modeM0/AS1P01_014T01_9000000080_00571cztM0_level2_quad_clean.evt
Size (bytes)793,491,84071,593,920
Size756.7 MB 68.3 MB
Events in quadrant A5,854,941462,232
Events in quadrant B6,024,259456,696
Events in quadrant C5,959,624448,425
Events in quadrant D5,856,661447,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209942
B0214971
C0213481
D0209831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504310.019829%
B5043150.297442%
C50431893.747769%
D5043511.011303%

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 7198 5044 100 100 1.39% 1.98%
B 7198 5044 111 111 1.54% 2.20%
C 7198 5044 226 226 3.14% 4.48%
D 7198 5044 193 193 2.68% 3.83%

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 0 149 70198 210.0 1470 1454 327.3
A 15 171 44612 131.84 1470 1454 327.3
A 0 238 34707 101.58 1470 1454 327.3
B 8 4 100259 279.54 1489 1491 353.3
B 4 250 75341 209.01 1489 1491 353.3
B 4 206 67090 185.66 1489 1491 353.3
C 15 241 547269 1432.13 1362 1414 381.1
C 3 159 35612 89.72 1362 1414 381.1
C 7 222 8119 17.59 1362 1414 381.1
D 1 4 327092 790.08 1324 1375 412.3
D 13 221 117526 281.74 1324 1375 412.3
D 13 51 63005 149.49 1324 1375 412.3

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