ASTROSAT CZTI

Data Quality Report

Orbit 27689

Creation date: 2024-06-27T19:43:05.758269
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_038T39_9000003984_27689cztM0_level2.evt modeM0/AS1A09_038T39_9000003984_27689cztM0_level2_quad_clean.evt
Size (bytes)233,985,60058,314,240
Size223.1 MB 55.6 MB
Events in quadrant A1,379,628399,644
Events in quadrant B1,572,605399,685
Events in quadrant C1,351,915377,984
Events in quadrant D2,564,257362,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064730
B069140
C063780
D098120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3176150.472292%
B3177451.416431%
C3177150.472144%
D31771143.588291%

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 3176 3176 14 14 0.44% 0.44%
B 3177 3177 31 31 0.98% 0.98%
C 3177 3177 1 1 0.03% 0.03%
D 3177 3177 156 156 4.91% 4.91%

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 13 248 44157 609.05 346 339 71.9
A 13 254 5815 76.11 346 339 71.9
A 3 137 3131 38.81 346 339 71.9
B 5 172 156244 2340.63 345 338 66.6
B 0 230 21289 314.54 345 338 66.6
B 0 244 10247 148.76 345 338 66.6
C 14 238 53885 689.56 328 330 77.7
C 8 208 9139 113.42 328 330 77.7
C 15 208 6746 82.61 328 330 77.7
D 12 2 625891 8029.27 322 313 77.9
D 1 52 605704 7770.17 322 313 77.9
D 2 250 39199 499.1 322 313 77.9

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