ASTROSAT CZTI

Data Quality Report

Orbit 40375

Creation date: 2024-06-27T22:15:24.683783
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_056T02_9000005538_40375cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40375cztM0_level2_quad_clean.evt
Size (bytes)326,508,48089,516,160
Size311.4 MB 85.4 MB
Events in quadrant A2,931,607628,404
Events in quadrant B3,097,462640,081
Events in quadrant C2,468,184606,533
Events in quadrant D3,198,496484,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116493
B0124012
C0102992
D0128692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005661.318681%
B50051212.417582%
C5005120.239760%
D500579315.844156%

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 7128 5006 36 36 0.51% 0.72%
B 7128 5006 14 14 0.20% 0.28%
C 7128 5006 8 8 0.11% 0.16%
D 7128 5005 140 140 1.96% 2.80%

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 470135 3972.37 582 572 118.2
A 13 248 157437 1327.03 582 572 118.2
A 9 191 28062 232.55 582 572 118.2
B 7 202 682643 6244.01 578 565 109.2
B 4 170 60052 544.57 578 565 109.2
B 5 255 39970 360.73 578 565 109.2
C 15 214 216714 1673.46 561 565 129.2
C 0 10 45579 348.51 561 565 129.2
C 14 254 11926 87.96 561 565 129.2
D 2 250 536774 4180.12 514 500 128.3
D 12 227 293541 2284.18 514 500 128.3
D 12 191 173481 1348.34 514 500 128.3

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