ASTROSAT CZTI

Data Quality Report

Orbit 41826

Creation date: 2024-06-27T22:33:17.029850
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_097T03_9000005706_41826cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41826cztM0_level2_quad_clean.evt
Size (bytes)303,857,28085,213,440
Size289.8 MB 81.3 MB
Events in quadrant A2,732,734582,033
Events in quadrant B2,389,655581,353
Events in quadrant C2,906,813536,100
Events in quadrant D2,811,010514,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112022
B0108571
C0118491
D0117271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5224100.191424%
B5224310.593415%
C52251322.526316%
D5225220.421053%

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 6806 5225 4 4 0.06% 0.08%
B 6806 5225 14 14 0.21% 0.27%
C 6807 5226 120 120 1.76% 2.30%
D 6807 5226 19 19 0.28% 0.36%

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 497847 4287.9 564 553 116.0
A 14 24 21704 182.37 564 553 116.0
A 6 10 16337 136.1 564 553 116.0
B 4 141 52471 477.66 559 544 108.7
B 3 112 48861 444.45 559 544 108.7
B 0 183 29055 262.26 559 544 108.7
C 0 10 520128 4138.34 535 537 125.6
C 15 214 207761 1650.46 535 537 125.6
C 15 159 51985 409.76 535 537 125.6
D 12 79 392512 2940.78 547 532 133.3
D 1 52 75097 559.41 547 532 133.3
D 13 249 69434 516.93 547 532 133.3

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