ASTROSAT CZTI

Data Quality Report

Orbit 39535

Creation date: 2024-06-27T22:05:49.835282
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_018T01_9000005488_39535cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39535cztM0_level2_quad_clean.evt
Size (bytes)295,571,52085,896,000
Size281.9 MB 81.9 MB
Events in quadrant A2,514,040575,844
Events in quadrant B2,121,840596,583
Events in quadrant C3,257,677561,479
Events in quadrant D2,661,554519,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106213
B099442
C0129882
D0116072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494790.181928%
B494740.080857%
C49471472.971498%
D4947881.778856%

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 7069 4948 4 4 0.06% 0.08%
B 7069 4948 0 0 0.00% 0.00%
C 7069 4948 133 133 1.88% 2.69%
D 7069 4948 88 88 1.24% 1.78%

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 406682 3722.63 534 524 109.1
A 15 222 22303 199.61 534 524 109.1
A 13 248 12259 107.56 534 524 109.1
B 0 230 13057 123.12 533 520 101.8
B 12 111 12644 119.06 533 520 101.8
B 11 111 11624 109.04 533 520 101.8
C 9 187 946605 7882.7 519 523 120.0
C 15 214 208317 1731.33 519 523 120.0
C 15 208 63433 524.16 519 523 120.0
D 2 249 287879 2278.9 516 502 126.1
D 13 249 214460 1696.69 516 502 126.1
D 12 227 111301 878.64 516 502 126.1

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