ASTROSAT CZTI

Data Quality Report

Orbit 42764

Creation date: 2024-06-27T22:43:57.409798
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_42764cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42764cztM0_level2_quad_clean.evt
Size (bytes)294,243,84089,449,920
Size280.6 MB 85.3 MB
Events in quadrant A3,087,451605,159
Events in quadrant B2,456,917619,015
Events in quadrant C2,509,334595,314
Events in quadrant D2,458,727548,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120672
B0103112
C0101812
D0105752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4866971.993424%
B4866491.006987%
C4866100.205508%
D4866320.657624%

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 6959 4867 79 79 1.14% 1.62%
B 6959 4867 33 33 0.47% 0.68%
C 6959 4867 8 8 0.11% 0.16%
D 6959 4867 28 28 0.40% 0.58%

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 516879 4406.17 573 563 117.2
A 13 248 332026 2828.66 573 563 117.2
A 12 189 16249 133.86 573 563 117.2
B 0 156 87989 796.52 572 556 109.8
B 5 172 57717 520.74 572 556 109.8
B 0 245 21752 193.1 572 556 109.8
C 15 214 203487 1547.47 562 566 131.1
C 14 254 88768 672.63 562 566 131.1
C 3 233 9150 65.46 562 566 131.1
D 12 6 75452 554.63 557 542 135.1
D 2 249 54251 397.66 557 542 135.1
D 12 217 51532 377.53 557 542 135.1

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