ASTROSAT CZTI

Data Quality Report

Orbit 35646

Creation date: 2022-05-02T18:54:02.126572
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/AS1A11_106T01_9000005102_35646cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35646cztM0_level2_quad_clean.evt
Size (bytes)676,941,12050,284,800
Size645.6 MB 48.0 MB
Events in quadrant A12,167,782165,836
Events in quadrant B2,738,489342,604
Events in quadrant C2,864,224337,035
Events in quadrant D2,396,468330,044

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393962
B0113021
C0113721
D0105251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927490199.472296%
B4927921.867262%
C4927831.684595%
D492780.162371%

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 6211 4928 4744 4744 76.38% 96.27%
B 6211 4928 53 53 0.85% 1.08%
C 6211 4928 65 65 1.05% 1.32%
D 6211 4928 2 2 0.03% 0.04%

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 15 169 10845017 160419.06 328 322 67.6
A 10 83 50741 745.82 328 322 67.6
A 13 254 3832 51.92 328 322 67.6
B 5 172 480815 4313.91 566 549 111.3
B 4 232 17245 149.96 566 549 111.3
B 12 111 14437 124.74 566 549 111.3
C 0 10 258854 1956.87 560 564 132.0
C 15 214 200377 1513.84 560 564 132.0
C 9 187 93897 707.12 560 564 132.0
D 12 217 160101 1158.54 562 546 137.7
D 2 153 27951 198.99 562 546 137.7
D 8 195 25445 180.79 562 546 137.7

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