ASTROSAT CZTI

Data Quality Report

Orbit 38620

Creation date: 2024-06-27T21:54:12.446222
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/AS1A12_052T04_9000005388_38620cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38620cztM0_level2_quad_clean.evt
Size (bytes)495,037,44096,569,280
Size472.1 MB 92.1 MB
Events in quadrant A3,164,341684,677
Events in quadrant B3,411,102711,853
Events in quadrant C3,486,890677,787
Events in quadrant D7,863,910489,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123923
B0134122
C0137892
D0269732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140921.789883%
B5140881.712062%
C5140711.381323%
D5140137526.750973%

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 7113 5141 71 71 1.00% 1.38%
B 7113 5140 52 52 0.73% 1.01%
C 7113 5141 69 69 0.97% 1.34%
D 7113 5140 1476 1476 20.75% 28.72%

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 406652 3181.24 640 629 127.6
A 7 3 137530 1072.64 640 629 127.6
A 13 248 79755 619.96 640 629 127.6
B 4 171 757729 6309.63 637 620 120.0
B 5 172 131904 1094.1 637 620 120.0
B 12 111 13891 110.6 637 620 120.0
C 14 254 673075 4655.27 629 634 144.4
C 15 214 211392 1459.06 629 634 144.4
C 15 159 104221 717.13 629 634 144.4
D 12 227 2762498 20122.54 572 557 137.3
D 1 47 1080742 7869.85 572 557 137.3
D 2 249 487204 3545.54 572 557 137.3

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