ASTROSAT CZTI

Data Quality Report

Orbit 22844

Creation date: 2024-06-27T18:46:32.212565
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/AS1C05_001T01_9000003374_22844cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22844cztM0_level2_quad_clean.evt
Size (bytes)506,874,240126,354,240
Size483.4 MB 120.5 MB
Events in quadrant A3,826,893863,076
Events in quadrant B3,213,349875,827
Events in quadrant C3,039,741837,816
Events in quadrant D4,828,024795,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155620
B0136610
C0133610
D0187160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526931.425069%
B6526931.425069%
C65261071.639595%
D65274356.664624%

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 7196 6527 7 7 0.10% 0.11%
B 7196 6527 3 3 0.04% 0.05%
C 7196 6527 1 1 0.01% 0.02%
D 7197 6528 322 322 4.47% 4.93%

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 11 47 792657 4997.67 786 769 158.5
A 13 254 12037 71.11 786 769 158.5
A 0 226 6827 38.23 786 769 158.5
B 0 190 89570 608.41 781 762 146.0
B 0 228 23440 155.36 781 762 146.0
B 4 21 17572 115.16 781 762 146.0
C 14 238 119991 691.56 747 750 172.4
C 0 207 6853 35.4 747 750 172.4
C 13 61 5227 25.97 747 750 172.4
D 1 239 992407 5463.0 745 721 181.5
D 13 249 418543 2301.7 745 721 181.5
D 7 238 220595 1211.24 745 721 181.5

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