ASTROSAT CZTI

Data Quality Report

Orbit 40470

Creation date: 2024-06-27T22:16:30.104091
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_022T01_9000005540_40470cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40470cztM0_level2_quad_clean.evt
Size (bytes)320,492,16089,752,320
Size305.6 MB 85.6 MB
Events in quadrant A2,851,674608,719
Events in quadrant B2,449,923622,166
Events in quadrant C2,723,654598,820
Events in quadrant D3,399,210494,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119393
B0113302
C0117982
D0142332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562370.124489%
B562370.124489%
C5623140.248977%
D562371012.626712%

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 8790 5625 3 3 0.03% 0.05%
B 8790 5625 2 2 0.02% 0.04%
C 8790 5625 16 16 0.18% 0.28%
D 8790 5625 207 207 2.35% 3.68%

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 504868 4131.2 600 588 122.1
A 3 1 13432 105.22 600 588 122.1
A 3 137 6730 50.31 600 588 122.1
B 0 230 32412 274.52 597 581 116.0
B 3 112 27531 232.43 597 581 116.0
B 5 255 18804 157.16 597 581 116.0
C 15 214 242923 1768.5 586 589 137.0
C 14 254 159927 1162.81 586 589 137.0
C 10 20 23402 166.48 586 589 137.0
D 2 250 508272 3756.08 546 529 135.2
D 13 171 464841 3434.79 546 529 135.2
D 12 191 154945 1142.31 546 529 135.2

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