ASTROSAT CZTI

Data Quality Report

Orbit 42721

Creation date: 2024-06-27T22:43:27.185287
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/AS1A05_013T01_9000005822_42721cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42721cztM0_level2_quad_clean.evt
Size (bytes)316,869,12088,793,280
Size302.2 MB 84.7 MB
Events in quadrant A2,895,335613,451
Events in quadrant B2,523,980631,597
Events in quadrant C2,459,307590,810
Events in quadrant D3,468,500509,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115412
B0105112
C099432
D0135752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490390.183561%
B4903350.713849%
C490360.122374%
D49033567.260861%

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 7057 4904 4 4 0.06% 0.08%
B 7057 4904 24 24 0.34% 0.49%
C 7057 4904 1 1 0.01% 0.02%
D 7057 4904 325 325 4.61% 6.63%

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 519857 4402.72 581 572 117.9
A 12 189 112745 951.05 581 572 117.9
A 13 6 10056 80.41 581 572 117.9
B 5 255 116367 1045.01 578 564 110.8
B 15 85 53056 473.69 578 564 110.8
B 5 172 33176 294.29 578 564 110.8
C 15 214 206082 1558.36 567 571 131.9
C 3 233 16372 119.82 567 571 131.9
C 14 254 11637 83.91 567 571 131.9
D 2 249 1090281 8193.55 547 531 133.0
D 9 19 109811 821.65 547 531 133.0
D 12 6 95459 713.74 547 531 133.0

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