ASTROSAT CZTI

Data Quality Report

Orbit 40922

Creation date: 2024-06-27T22:22:15.542290
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_044T19_9000005580_40922cztM0_level2.fits modeM0/AS1A12_044T19_9000005580_40922cztM0_level2_quad_clean.evt
Size (bytes)335,903,04094,294,080
Size320.3 MB 89.9 MB
Events in quadrant A3,011,788649,490
Events in quadrant B2,544,027655,326
Events in quadrant C2,760,365606,888
Events in quadrant D3,694,461563,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122583
B0112082
C0115922
D0146012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5436210.386313%
B5436210.386313%
C5436681.250920%
D54361903.495217%

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 7348 5437 1 1 0.01% 0.02%
B 7348 5437 13 13 0.18% 0.24%
C 7348 5437 55 55 0.75% 1.01%
D 7348 5437 163 163 2.22% 3.00%

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 529651 4104.61 632 619 128.9
A 12 189 21634 163.05 632 619 128.9
A 13 254 8793 63.42 632 619 128.9
B 5 255 75579 616.75 621 604 121.6
B 0 229 27417 220.57 621 604 121.6
B 12 111 14911 117.69 621 604 121.6
C 15 214 229213 1629.77 601 605 140.3
C 0 10 184467 1310.77 601 605 140.3
C 13 61 4104 24.94 601 605 140.3
D 2 249 520928 3462.97 605 588 150.3
D 13 249 291188 1934.0 605 588 150.3
D 12 233 213836 1419.21 605 588 150.3

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