ASTROSAT CZTI

Data Quality Report

Orbit 20201110_A09_038T39_9000003984_level2

Creation date: 2021-01-07T14:25:42.296425
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_9000003984cztM0_level2_bc.evt modeM0/AS1A09_038T39_9000003984cztM0_level2_quad_clean.evt
Size (bytes)188,164,80078,960,960
Size179.4 MB 75.3 MB
Events in quadrant A883,878544,176
Events in quadrant B1,037,484548,113
Events in quadrant C824,584517,676
Events in quadrant D2,661,929488,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087000
B093360
C085890
D0143670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4162270.648727%
B4162581.393561%
C4162320.768861%
D41623057.328208%

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 4160 4160 0 0 0.00% 0.00%
B 4161 4161 0 0 0.00% 0.00%
C 4161 4161 1 1 0.02% 0.02%
D 4161 4161 41 41 0.99% 0.99%

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 38212 756.82 217 213 50.2
A 13 254 7351 142.17 217 213 50.2
A 8 192 5415 103.61 217 213 50.2
B 5 172 108749 2468.83 218 213 44.0
B 0 230 52689 1193.65 218 213 44.0
B 0 244 8681 192.62 218 213 44.0
C 15 208 11963 228.47 206 204 51.5
C 8 208 11060 210.92 206 204 51.5
C 3 233 8083 153.08 206 204 51.5
D 1 52 1076951 21803.94 204 197 49.4
D 12 2 595598 12056.69 204 197 49.4
D 2 250 128948 2607.17 204 197 49.4

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