ASTROSAT CZTI

Data Quality Report

Orbit 40994

Creation date: 2024-06-27T22:23:05.360664
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_066T01_9000005584_40994cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40994cztM0_level2_quad_clean.evt
Size (bytes)323,110,08093,044,160
Size308.1 MB 88.7 MB
Events in quadrant A3,012,276630,331
Events in quadrant B2,493,296644,092
Events in quadrant C2,859,059603,095
Events in quadrant D3,171,070558,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120743
B0110472
C0118192
D0131742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5451150.275179%
B5451130.238488%
C5451801.467621%
D54511502.751789%

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 7274 5452 4 4 0.05% 0.07%
B 7274 5452 1 1 0.01% 0.02%
C 7274 5452 79 79 1.09% 1.45%
D 7274 5452 130 130 1.79% 2.38%

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 509540 3918.36 630 617 129.9
A 12 189 64056 488.44 630 617 129.9
A 13 254 8328 59.37 630 617 129.9
B 5 255 33822 272.75 620 603 121.8
B 0 229 16928 134.04 620 603 121.8
B 12 111 15351 121.09 620 603 121.8
C 15 214 232952 1648.22 603 606 141.0
C 0 10 201724 1426.69 603 606 141.0
C 12 249 34524 240.61 603 606 141.0
D 2 249 300168 2011.27 607 590 148.9
D 13 249 255712 1712.81 607 590 148.9
D 12 233 135395 905.04 607 590 148.9

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