ASTROSAT CZTI

Data Quality Report

Orbit 41776

Creation date: 2024-06-27T22:32:43.023293
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_044T19_9000005698_41776cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41776cztM0_level2_quad_clean.evt
Size (bytes)332,225,28089,798,400
Size316.8 MB 85.6 MB
Events in quadrant A2,997,960614,273
Events in quadrant B2,768,451628,543
Events in quadrant C3,368,612562,971
Events in quadrant D2,748,283540,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119928
B0115992
C0129832
D0118923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5320180.338346%
B5322360.676437%
C53222584.847802%
D5321951.785379%

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 7115 5322 2 2 0.03% 0.04%
B 7115 5323 26 26 0.37% 0.49%
C 7115 5323 240 240 3.37% 4.51%
D 7115 5323 77 77 1.08% 1.45%

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 558467 4387.82 616 604 127.1
A 15 223 20465 156.21 616 604 127.1
A 3 1 13523 101.61 616 604 127.1
B 0 186 213118 1826.41 604 589 116.4
B 4 141 60626 515.94 604 589 116.4
B 4 81 25599 214.93 604 589 116.4
C 0 10 836714 6246.95 572 575 133.8
C 15 214 216259 1611.42 572 575 133.8
C 4 254 68407 506.79 572 575 133.8
D 2 249 251585 1713.5 594 577 146.5
D 12 6 108580 737.28 594 577 146.5
D 13 249 37756 253.8 594 577 146.5

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