ASTROSAT CZTI

Data Quality Report

Orbit 27541

Creation date: 2024-06-27T19:41:15.668347
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_038T26_9000003948_27541cztM0_level2.evt modeM0/AS1A09_038T26_9000003948_27541cztM0_level2_quad_clean.evt
Size (bytes)133,983,36032,843,520
Size127.8 MB 31.3 MB
Events in quadrant A795,107224,663
Events in quadrant B874,698227,903
Events in quadrant C1,052,511213,565
Events in quadrant D1,218,492204,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034720
B036580
C042630
D048060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168720.118554%
B168890.533175%
C1688301.777251%
D16881106.516588%

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 1687 1687 0 0 0.00% 0.00%
B 1688 1688 3 3 0.18% 0.18%
C 1688 1688 15 15 0.89% 0.89%
D 1688 1688 100 100 5.92% 5.92%

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 13 254 3396 74.19 205 201 43.1
A 3 137 2032 42.52 205 201 43.1
A 0 226 1767 36.37 205 201 43.1
B 10 245 29690 706.19 207 202 41.8
B 0 244 13072 308.22 207 202 41.8
B 0 230 5931 137.2 207 202 41.8
C 7 221 222983 4765.42 190 190 46.8
C 2 16 56146 1196.87 190 190 46.8
C 14 238 30752 653.7 190 190 46.8
D 1 52 433749 9266.55 186 180 46.8
D 2 250 63332 1349.73 186 180 46.8
D 2 234 7700 160.72 186 180 46.8

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