ASTROSAT CZTI

Data Quality Report

Orbit 42676

Creation date: 2024-06-27T22:42:55.300137
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/AS1A05_013T01_9000005822_42676cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42676cztM0_level2_quad_clean.evt
Size (bytes)331,873,92091,209,600
Size316.5 MB 87.0 MB
Events in quadrant A3,155,195626,790
Events in quadrant B2,972,762637,660
Events in quadrant C2,656,322602,728
Events in quadrant D3,105,090538,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122752
B0120812
C0106942
D0126892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5076591.162333%
B50761332.620173%
C5076130.256107%
D50761923.782506%

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 7079 5077 53 53 0.75% 1.04%
B 7079 5077 112 112 1.58% 2.21%
C 7079 5077 11 11 0.16% 0.22%
D 7079 5077 184 184 2.60% 3.62%

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 539200 4408.22 594 583 122.2
A 15 223 247084 2017.45 594 583 122.2
A 15 237 57875 468.9 594 583 122.2
B 10 246 246424 2170.35 590 575 113.3
B 0 229 176363 1551.86 590 575 113.3
B 0 245 109722 963.55 590 575 113.3
C 15 214 226560 1684.49 578 581 134.2
C 14 254 116903 867.09 578 581 134.2
C 8 79 20219 146.39 578 581 134.2
D 2 249 416148 3025.85 567 552 137.3
D 12 233 189216 1373.61 567 552 137.3
D 12 6 84115 608.4 567 552 137.3

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