ASTROSAT CZTI

Data Quality Report

Orbit 39974

Creation date: 2024-06-27T22:10:48.269527
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_054T03_9000005516_39974cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39974cztM0_level2_quad_clean.evt
Size (bytes)384,560,64095,434,560
Size366.7 MB 91.0 MB
Events in quadrant A3,229,230642,931
Events in quadrant B3,299,617652,341
Events in quadrant C3,004,901629,981
Events in quadrant D4,236,937547,372

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131263
B0138252
C0125772
D0167962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968340.569705%
B59681222.044236%
C5968190.318365%
D59684537.590483%

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 7250 5968 18 18 0.25% 0.30%
B 7250 5967 85 85 1.17% 1.42%
C 7250 5967 15 15 0.21% 0.25%
D 7250 5967 407 407 5.61% 6.82%

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 514346 3792.46 657 645 135.5
A 6 10 84464 618.8 657 645 135.5
A 13 248 71353 522.01 657 645 135.5
B 4 171 527165 4176.43 650 633 126.1
B 5 255 93556 737.06 650 633 126.1
B 0 230 51847 406.23 650 633 126.1
C 15 214 250271 1647.01 642 646 151.6
C 3 233 142624 936.76 642 646 151.6
C 0 10 75615 494.64 642 646 151.6
D 12 227 792733 5159.86 620 602 153.5
D 2 250 609309 3965.06 620 602 153.5
D 1 47 199894 1298.17 620 602 153.5

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