ASTROSAT CZTI

Data Quality Report

Orbit 45491

Creation date: 2024-06-27T23:12:50.786594
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/AS1A13_054T01_9000006098_45491cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45491cztM0_level2_quad_clean.evt
Size (bytes)509,290,560109,422,720
Size485.7 MB 104.4 MB
Events in quadrant A5,726,027724,316
Events in quadrant B3,881,868749,441
Events in quadrant C3,113,380735,381
Events in quadrant D5,610,328635,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221252
B0162802
C0141602
D0213922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67112283.397407%
B67113044.529876%
C6711721.072865%
D67114887.271644%

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 7642 6713 26 26 0.34% 0.39%
B 7642 6713 144 144 1.88% 2.15%
C 7642 6713 36 36 0.47% 0.54%
D 7642 6713 423 423 5.54% 6.30%

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 10 83 2752650 17719.23 751 735 155.3
A 13 248 57299 364.21 751 735 155.3
A 0 243 8774 51.76 751 735 155.3
B 15 201 579352 3922.37 752 730 147.5
B 12 18 178221 1203.17 752 730 147.5
B 5 172 49546 330.91 752 730 147.5
C 14 254 163790 922.98 748 753 176.6
C 1 3 14222 76.25 748 753 176.6
C 2 14 7781 39.79 748 753 176.6
D 1 52 1632878 8910.87 724 702 183.2
D 11 241 682384 3721.64 724 702 183.2
D 2 249 112532 610.54 724 702 183.2

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