ASTROSAT CZTI

Data Quality Report

Orbit 20240803_A09_038T16_9000006364_level2

Creation date: 2024-08-06T09:31:52.998374
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_038T16_9000006364cztM0_level2.fits modeM0/AS1A09_038T16_9000006364cztM0_level2_quad_clean.evt
Size (bytes)130,230,720175,939,200
Size124.2 MB 167.8 MB
Events in quadrant A758,9661,152,079
Events in quadrant B755,0881,188,785
Events in quadrant C781,7681,153,873
Events in quadrant D568,960756,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0551970
B0321890
C0323560
D0758330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156065763.690888%
B156082041.307022%
C156081380.884162%
D15608449428.792927%

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 17338 15605 0 0 0.00% 0.00%
B 17337 15607 0 0 0.00% 0.00%
C 17338 15607 0 0 0.00% 0.00%
D 17337 15589 0 0 0.00% 0.00%

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 7 110 638 8.46 197 184 53.6
A 15 236 616 8.05 197 184 53.6
A 9 19 585 7.47 197 184 53.6
B 2 9 759 13.83 198 188 41.3
B 2 8 588 9.69 198 188 41.3
B 3 17 582 9.55 198 188 41.3
C 3 202 631 7.93 206 191 55.5
C 3 203 608 7.52 206 191 55.5
C 1 80 604 7.45 206 191 55.5
D 15 47 455 6.54 162 147 47.1
D 4 16 422 5.84 162 147 47.1
D 6 67 421 5.82 162 147 47.1

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