ASTROSAT CZTI

Data Quality Report

Orbit 38720

Creation date: 2024-06-27T21:55:33.285470
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_054T01_9000005392_38720cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38720cztM0_level2_quad_clean.evt
Size (bytes)549,748,80078,603,840
Size524.3 MB 75.0 MB
Events in quadrant A2,713,428619,163
Events in quadrant B2,576,983635,102
Events in quadrant C2,716,901605,526
Events in quadrant D11,935,741154,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114083
B0110552
C0113682
D0389962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5223130.248899%
B5223440.842428%
C5223260.497798%
D5223409478.384070%

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 7047 5224 3 3 0.04% 0.06%
B 7047 5224 17 17 0.24% 0.33%
C 7047 5224 17 17 0.24% 0.33%
D 7047 5224 3715 3715 52.72% 71.11%

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 377101 3132.23 593 582 120.2
A 0 8 20598 166.51 593 582 120.2
A 9 143 8066 62.26 593 582 120.2
B 4 171 144558 1252.55 592 576 115.0
B 0 213 55945 481.67 592 576 115.0
B 0 230 15387 128.84 592 576 115.0
C 15 214 217278 1596.81 581 587 135.7
C 15 208 174523 1281.74 581 587 135.7
C 14 254 31418 227.2 581 587 135.7
D 12 235 5851499 59459.7 399 389 98.4
D 2 16 4129767 41963.25 399 389 98.4
D 10 118 100896 1021.36 399 389 98.4

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