ASTROSAT CZTI

Data Quality Report

Orbit 41159

Creation date: 2024-06-27T22:25:14.016396
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_037T01_9000005608_41159cztM0_level2.fits modeM0/AS1A12_037T01_9000005608_41159cztM0_level2_quad_clean.evt
Size (bytes)488,044,80082,716,480
Size465.4 MB 78.9 MB
Events in quadrant A2,733,449601,490
Events in quadrant B2,851,243606,810
Events in quadrant C7,317,569400,691
Events in quadrant D4,752,629524,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113092
B0119581
C0252491
D0178571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529050.094518%
B5290510.964083%
C5290183534.688091%
D52901703.213611%

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 7053 5291 1 1 0.01% 0.02%
B 7053 5291 38 38 0.54% 0.72%
C 7053 5291 1577 1577 22.36% 29.81%
D 7053 5291 143 143 2.03% 2.70%

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 455760 3743.04 587 574 121.6
A 13 254 8816 67.77 587 574 121.6
A 3 137 6567 49.28 587 574 121.6
B 0 245 497127 4425.96 577 560 112.2
B 7 202 55909 493.33 577 560 112.2
B 12 111 13919 119.07 577 560 112.2
C 9 54 5014469 43539.81 493 496 115.2
C 15 214 198002 1715.08 493 496 115.2
C 0 10 86261 744.76 493 496 115.2
D 2 16 1998204 14372.59 563 546 139.0
D 13 249 418585 3007.67 563 546 139.0
D 5 32 84744 605.78 563 546 139.0

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