ASTROSAT CZTI

Data Quality Report

Orbit 37979

Creation date: 2024-06-27T21:46:55.513800
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_082T01_9000005356_37979cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37979cztM0_level2_quad_clean.evt
Size (bytes)501,791,04063,717,120
Size478.5 MB 60.8 MB
Events in quadrant A6,258,299379,339
Events in quadrant B2,793,622409,469
Events in quadrant C2,737,057399,920
Events in quadrant D3,037,580357,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224583
B0119312
C0113932
D0128602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54643085.636896%
B5464520.951684%
C5464100.183016%
D54641071.958272%

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 8602 5466 194 194 2.26% 3.55%
B 8602 5466 34 34 0.40% 0.62%
C 8602 5466 5 5 0.06% 0.09%
D 8602 5466 87 87 1.01% 1.59%

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 15 222 3475369 27937.11 609 597 124.4
A 10 83 359576 2886.19 609 597 124.4
A 13 6 17179 133.32 609 597 124.4
B 5 172 154819 1290.12 617 602 119.5
B 5 200 55079 455.73 617 602 119.5
B 5 184 54830 453.65 617 602 119.5
C 15 214 233764 1640.49 608 613 142.1
C 14 254 42591 295.36 608 613 142.1
C 2 16 42559 295.14 608 613 142.1
D 12 227 261496 1774.71 601 583 147.0
D 2 250 98360 665.07 601 583 147.0
D 10 118 72902 491.91 601 583 147.0

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