ASTROSAT CZTI

Data Quality Report

Orbit 31554

Creation date: 2024-06-27T20:29:53.517894
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/AS1A10_056T01_9000004598_31554cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31554cztM0_level2_quad_clean.evt
Size (bytes)599,630,400115,577,280
Size571.9 MB 110.2 MB
Events in quadrant A3,339,800769,014
Events in quadrant B6,931,962775,120
Events in quadrant C3,609,004760,191
Events in quadrant D3,829,042732,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143422
B0250932
C0150752
D0156672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6642470.707618%
B664398314.797531%
C66431832.754779%
D66431041.565558%

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 9047 6642 0 0 0.00% 0.00%
B 9048 6644 602 602 6.65% 9.06%
C 9048 6643 18 18 0.20% 0.27%
D 9048 6643 35 35 0.39% 0.53%

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 13 254 12573 68.71 865 850 170.6
A 3 137 8461 44.61 865 850 170.6
A 0 226 7142 36.88 865 850 170.6
B 4 80 1770281 11401.76 832 812 155.2
B 6 159 1754863 11302.41 832 812 155.2
B 5 172 67583 430.25 832 812 155.2
C 14 238 136157 691.84 845 852 195.6
C 0 10 96725 490.22 845 852 195.6
C 3 233 48648 244.39 845 852 195.6
D 8 195 334542 1684.95 844 822 198.1
D 2 250 125881 631.42 844 822 198.1
D 13 249 98120 491.26 844 822 198.1

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