ASTROSAT CZTI

Data Quality Report

Orbit 40096

Creation date: 2024-06-27T22:12:17.462943
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_004T01_9000005520_40096cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40096cztM0_level2_quad_clean.evt
Size (bytes)447,431,04085,930,560
Size426.7 MB 81.9 MB
Events in quadrant A2,742,843606,335
Events in quadrant B2,674,878619,158
Events in quadrant C6,295,334514,434
Events in quadrant D4,447,598499,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114533
B0113922
C0222732
D0168602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5170150.290135%
B5170771.489362%
C517097718.897485%
D517062212.030948%

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 7022 5171 3 3 0.04% 0.06%
B 7022 5171 51 51 0.73% 0.99%
C 7022 5171 863 863 12.29% 16.69%
D 7022 5171 560 560 7.97% 10.83%

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 447943 3783.27 580 569 118.3
A 9 143 17805 145.76 580 569 118.3
A 2 79 16858 137.75 580 569 118.3
B 10 246 185204 1656.11 578 562 111.5
B 4 171 107221 956.66 578 562 111.5
B 0 189 91844 818.73 578 562 111.5
C 9 187 3595866 28495.78 541 545 126.2
C 9 54 264480 2091.9 541 545 126.2
C 15 214 203920 1611.91 541 545 126.2
D 12 227 1560929 11753.01 540 524 132.8
D 13 249 446967 3362.62 540 524 132.8
D 2 249 111635 836.89 540 524 132.8

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