ASTROSAT CZTI

Data Quality Report

Orbit 42776

Creation date: 2024-06-27T22:44:05.429004
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_42776cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42776cztM0_level2_quad_clean.evt
Size (bytes)325,586,88089,461,440
Size310.5 MB 85.3 MB
Events in quadrant A2,928,817610,978
Events in quadrant B2,808,195599,980
Events in quadrant C2,650,405595,241
Events in quadrant D3,253,176532,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118072
B0119822
C0112052
D0135724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5281130.246165%
B52811532.897179%
C5281370.700625%
D52802244.242424%

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 7103 5282 6 6 0.08% 0.11%
B 7103 5282 108 108 1.52% 2.04%
C 7103 5282 38 38 0.53% 0.72%
D 7102 5281 217 217 3.06% 4.11%

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 584302 4807.25 589 576 121.4
A 13 6 21349 171.08 589 576 121.4
A 12 189 14813 117.25 589 576 121.4
B 0 229 370898 3279.98 577 560 112.9
B 0 156 102884 906.25 577 560 112.9
B 0 245 48754 426.84 577 560 112.9
C 15 214 213947 1593.44 571 576 133.9
C 14 254 124563 925.93 571 576 133.9
C 8 79 49862 368.07 571 576 133.9
D 10 118 451443 3279.76 556 540 137.5
D 1 20 311458 2261.54 556 540 137.5
D 13 249 193991 1407.12 556 540 137.5

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