ASTROSAT CZTI

Data Quality Report

Orbit 27575

Creation date: 2024-06-27T19:41:51.351958
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/AS1T03_259T01_9000003972_27575cztM0_level2.evt modeM0/AS1T03_259T01_9000003972_27575cztM0_level2_quad_clean.evt
Size (bytes)331,269,12060,851,520
Size315.9 MB 58.0 MB
Events in quadrant A2,138,658393,915
Events in quadrant B2,361,275403,610
Events in quadrant C2,223,200386,785
Events in quadrant D3,026,252365,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087460
B095490
C089650
D0117560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4153350.842764%
B4153611.468818%
C4153842.022634%
D41531112.672767%

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 5513 4154 2 2 0.04% 0.05%
B 5513 4154 3 3 0.05% 0.07%
C 5513 4154 4 4 0.07% 0.10%
D 5513 4154 62 62 1.12% 1.49%

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 13 254 7276 60.84 551 541 110.7
A 8 192 7001 58.35 551 541 110.7
A 15 174 5095 41.14 551 541 110.7
B 10 245 87016 830.76 552 539 104.1
B 15 222 28632 269.88 552 539 104.1
B 0 230 23144 217.16 552 539 104.1
C 14 238 88691 711.7 535 541 123.9
C 2 16 40412 321.91 535 541 123.9
C 13 61 3759 25.98 535 541 123.9
D 1 52 796075 6226.67 530 516 127.8
D 7 80 131030 1021.51 530 516 127.8
D 6 112 43552 336.83 530 516 127.8

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