ASTROSAT CZTI

Data Quality Report

Orbit 52017

Creation date: 2025-05-11T02:10:05.799388
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/AS1C09_011T06_9000006468_52017cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52017cztM0_level2_quad_clean.evt
Size (bytes)737,853,12085,737,600
Size703.7 MB 81.8 MB
Events in quadrant A4,594,984612,568
Events in quadrant B6,192,867608,299
Events in quadrant C9,020,371440,847
Events in quadrant D7,020,097495,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180111
B0228091
C0311881
D0252915

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62741772.821167%
B627474911.938157%
C6274205132.690469%
D627398915.765981%

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 7449 6275 114 114 1.53% 1.82%
B 7449 6275 300 300 4.03% 4.78%
C 7449 6275 1986 1986 26.66% 31.65%
D 7448 6274 995 995 13.36% 15.86%

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 3 95 479617 2849.29 670 655 168.1
A 4 95 399720 2373.99 670 655 168.1
A 3 14 395436 2348.5 670 655 168.1
B 7 0 975632 7219.1 643 622 135.1
B 12 18 789079 5837.84 643 622 135.1
B 5 185 512141 3787.35 643 622 135.1
C 15 224 5615671 35416.9 574 567 158.5
C 4 5 419182 2640.38 574 567 158.5
C 0 225 337590 2125.75 574 567 158.5
D 12 17 1783519 10095.07 617 589 176.6
D 8 176 1178035 6666.78 617 589 176.6
D 13 170 450925 2549.83 617 589 176.6

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