ASTROSAT CZTI

Data Quality Report

Orbit 41762

Creation date: 2024-06-27T22:32:33.161538
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_044T19_9000005698_41762cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41762cztM0_level2_quad_clean.evt
Size (bytes)370,091,52089,876,160
Size352.9 MB 85.7 MB
Events in quadrant A3,310,025617,778
Events in quadrant B2,731,703637,683
Events in quadrant C3,210,975570,105
Events in quadrant D4,036,915527,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130222
B0114632
C0126672
D0154785

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52671112.107462%
B5267430.816404%
C52672614.955383%
D52663857.311052%

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 7120 5268 71 71 1.00% 1.35%
B 7119 5267 17 17 0.24% 0.32%
C 7120 5267 247 247 3.47% 4.69%
D 7118 5265 328 328 4.61% 6.23%

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 522970 4159.63 615 604 125.6
A 6 10 211114 1676.3 615 604 125.6
A 2 79 116733 924.74 615 604 125.6
B 5 255 151341 1283.75 604 588 117.4
B 3 112 77609 655.88 604 588 117.4
B 0 245 61248 516.55 604 588 117.4
C 0 10 752923 5643.12 569 573 133.3
C 15 214 224477 1679.43 569 573 133.3
C 14 67 13547 97.31 569 573 133.3
D 2 120 647642 4458.5 584 566 145.1
D 2 249 586176 4034.99 584 566 145.1
D 12 6 343243 2361.12 584 566 145.1

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