ASTROSAT CZTI

Data Quality Report

Orbit 40475

Creation date: 2024-06-27T22:16:33.524457
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_022T01_9000005540_40475cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40475cztM0_level2_quad_clean.evt
Size (bytes)300,493,44091,468,800
Size286.6 MB 87.2 MB
Events in quadrant A2,796,608632,565
Events in quadrant B2,457,837649,196
Events in quadrant C2,701,443600,816
Events in quadrant D2,767,558528,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113603
B0104762
C0110402
D0113822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5122110.214760%
B5122180.351425%
C5122460.898087%
D51223456.735650%

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 7215 5123 4 4 0.06% 0.08%
B 7215 5123 8 8 0.11% 0.16%
C 7215 5123 37 37 0.51% 0.72%
D 7215 5123 31 31 0.43% 0.61%

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 465726 3860.13 593 583 120.5
A 9 191 18313 147.14 593 583 120.5
A 7 3 15209 121.38 593 583 120.5
B 3 112 57372 512.28 586 571 110.9
B 0 230 49743 443.47 586 571 110.9
B 5 255 42401 377.26 586 571 110.9
C 14 254 232587 1769.72 568 572 131.1
C 15 214 225552 1716.06 568 572 131.1
C 0 10 15818 116.29 568 572 131.1
D 1 47 158109 1157.95 555 540 136.1
D 12 191 139534 1021.45 555 540 136.1
D 2 69 119625 875.14 555 540 136.1

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