ASTROSAT CZTI

Data Quality Report

Orbit 39537

Creation date: 2024-06-27T22:05:51.642404
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_018T01_9000005488_39537cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39537cztM0_level2_quad_clean.evt
Size (bytes)350,017,92089,910,720
Size333.8 MB 85.7 MB
Events in quadrant A3,287,046589,176
Events in quadrant B2,303,644626,331
Events in quadrant C3,643,559578,983
Events in quadrant D3,287,976538,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134203
B0111812
C0145192
D0138952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55731462.619774%
B557370.125606%
C55732674.790956%
D55731723.086309%

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 7246 5574 122 122 1.68% 2.19%
B 7246 5574 1 1 0.01% 0.02%
C 7246 5574 226 226 3.12% 4.05%
D 7246 5574 146 146 2.01% 2.62%

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 6 10 454988 3909.09 575 564 116.2
A 10 83 435787 3743.92 575 564 116.2
A 15 222 152690 1308.63 575 564 116.2
B 12 111 14306 122.67 582 568 112.0
B 11 111 12954 110.6 582 568 112.0
B 14 111 12631 107.71 582 568 112.0
C 15 208 905350 6926.19 558 562 130.6
C 9 187 291978 2230.8 558 562 130.6
C 15 214 230730 1761.95 558 562 130.6
D 12 227 878863 6361.82 558 540 138.1
D 13 249 145706 1051.46 558 540 138.1
D 2 250 63470 455.81 558 540 138.1

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