ASTROSAT CZTI

Data Quality Report

Orbit 41149

Creation date: 2024-06-27T22:25:03.395862
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_9000005602_41149cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41149cztM0_level2_quad_clean.evt
Size (bytes)405,889,92089,136,000
Size387.1 MB 85.0 MB
Events in quadrant A2,896,628606,077
Events in quadrant B3,797,896592,146
Events in quadrant C4,627,244577,693
Events in quadrant D3,273,412536,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120452
B0151492
C0175242
D0137392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5529130.235124%
B55292724.919515%
C5529721.302225%
D55291482.676795%

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 8124 5531 3 3 0.04% 0.05%
B 8124 5531 189 189 2.33% 3.42%
C 8124 5531 57 57 0.70% 1.03%
D 8124 5531 128 128 1.58% 2.31%

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 498399 3967.08 603 590 125.5
A 12 189 33341 261.0 603 590 125.5
A 2 79 17136 131.86 603 590 125.5
B 0 245 759992 6700.43 588 573 113.3
B 7 202 577461 5089.94 588 573 113.3
B 0 186 127253 1117.71 588 573 113.3
C 9 54 1826546 13339.25 585 589 136.9
C 15 214 233867 1704.18 585 589 136.9
C 0 10 108741 790.09 585 589 136.9
D 13 249 464671 3210.83 585 567 144.5
D 2 16 345411 2385.75 585 567 144.5
D 2 249 156210 1076.79 585 567 144.5

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