ASTROSAT CZTI

Data Quality Report

Orbit 27570

Creation date: 2024-06-27T19:41:38.803115
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/AS1A09_038T14_9000003964_27570cztM0_level2.evt modeM0/AS1A09_038T14_9000003964_27570cztM0_level2_quad_clean.evt
Size (bytes)244,932,48062,464,320
Size233.6 MB 59.6 MB
Events in quadrant A1,488,926428,993
Events in quadrant B1,961,834426,775
Events in quadrant C1,488,109406,441
Events in quadrant D2,248,938390,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068790
B082000
C067930
D091140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3356110.327771%
B33561354.022646%
C3356290.864124%
D33561073.188319%

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 3356 3356 2 2 0.06% 0.06%
B 3356 3356 104 104 3.10% 3.10%
C 3356 3356 0 0 0.00% 0.00%
D 3356 3356 110 110 3.28% 3.28%

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 8 192 9550 118.27 381 375 77.6
A 13 254 6194 75.01 381 375 77.6
A 3 137 3550 40.93 381 375 77.6
B 10 245 417464 5684.8 378 368 73.4
B 0 230 19265 257.56 378 368 73.4
B 15 32 12519 165.61 378 368 73.4
C 14 238 59898 694.59 361 364 85.7
C 7 221 8284 92.4 361 364 85.7
C 14 67 7474 82.95 361 364 85.7
D 1 52 634453 7306.57 354 343 86.8
D 12 233 116319 1336.34 354 343 86.8
D 2 250 85022 975.72 354 343 86.8

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