ASTROSAT CZTI

Data Quality Report

Orbit 37682

Creation date: 2024-06-27T21:43:03.643761
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_075T01_9000005342_37682cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37682cztM0_level2_quad_clean.evt
Size (bytes)412,781,76084,110,400
Size393.7 MB 80.2 MB
Events in quadrant A2,597,841548,089
Events in quadrant B2,863,499560,128
Events in quadrant C2,582,408570,945
Events in quadrant D4,119,386518,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109163
B0117332
C0105522
D0156922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971310.623617%
B49711212.434118%
C4971430.865017%
D49714228.489238%

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 7034 4972 24 24 0.34% 0.48%
B 7033 4970 111 111 1.58% 2.23%
C 7033 4970 33 33 0.47% 0.66%
D 7033 4971 438 438 6.23% 8.81%

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 296224 2618.24 564 553 112.9
A 13 248 79682 700.71 564 553 112.9
A 9 143 11871 100.22 564 553 112.9
B 5 255 175965 1627.72 565 550 107.8
B 10 246 167934 1553.2 565 550 107.8
B 5 172 147517 1363.74 565 550 107.8
C 15 214 229377 1754.87 566 572 130.4
C 0 10 122550 935.54 566 572 130.4
C 14 254 15087 111.33 566 572 130.4
D 12 227 1321908 9795.8 549 535 134.9
D 5 32 282441 2089.87 549 535 134.9
D 2 249 108481 800.24 549 535 134.9

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