ASTROSAT CZTI

Data Quality Report

Orbit 37491

Creation date: 2024-06-27T21:40:43.089443
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/AS1C07_001T11_9000005326_37491cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37491cztM0_level2_quad_clean.evt
Size (bytes)606,061,44089,006,400
Size578.0 MB 84.9 MB
Events in quadrant A8,207,505421,585
Events in quadrant B2,600,555676,406
Events in quadrant C2,845,184666,827
Events in quadrant D4,369,222585,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275933
B0109382
C0113422
D0162402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4900265854.244898%
B4900641.306122%
C49001002.040816%
D490064613.183673%

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 6963 4901 2600 2600 37.34% 53.05%
B 6963 4901 48 48 0.69% 0.98%
C 6963 4901 86 86 1.24% 1.75%
D 6963 4901 601 601 8.63% 12.26%

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 15 222 6432395 84518.9 379 371 76.1
A 10 83 230549 3024.61 379 371 76.1
A 12 189 27476 356.17 379 371 76.1
B 5 172 215831 2052.29 565 552 104.9
B 5 255 30173 282.38 565 552 104.9
B 15 35 24964 232.72 565 552 104.9
C 15 214 208074 1631.02 554 560 127.2
C 0 10 194434 1523.82 554 560 127.2
C 14 254 135688 1062.08 554 560 127.2
D 13 249 1212293 9672.72 514 500 125.3
D 2 249 883756 7050.29 514 500 125.3
D 4 239 91361 725.27 514 500 125.3

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