ASTROSAT CZTI

Data Quality Report

Orbit 42316

Creation date: 2024-06-27T22:38:53.253078
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_102T01_9000005794_42316cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42316cztM0_level2_quad_clean.evt
Size (bytes)286,715,52087,410,880
Size273.4 MB 83.4 MB
Events in quadrant A2,726,093591,663
Events in quadrant B2,374,047596,817
Events in quadrant C2,352,290582,387
Events in quadrant D2,778,777532,533

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111152
B0104132
C0100032
D0117072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4896220.449346%
B4896340.694444%
C489670.142974%
D48961022.083333%

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 7048 4897 13 13 0.18% 0.27%
B 7048 4897 27 27 0.38% 0.55%
C 7048 4897 1 1 0.01% 0.02%
D 7048 4897 85 85 1.21% 1.74%

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 557384 5052.68 543 534 110.2
A 7 3 43997 394.37 543 534 110.2
A 15 252 9086 77.6 543 534 110.2
B 5 172 65394 632.17 542 526 102.6
B 15 35 64034 618.91 542 526 102.6
B 3 112 60653 585.96 542 526 102.6
C 15 214 205491 1628.13 542 545 125.9
C 12 249 16292 125.1 542 545 125.9
C 3 233 14880 113.88 542 545 125.9
D 12 6 197766 1520.73 536 522 129.7
D 13 249 145506 1117.81 536 522 129.7
D 5 171 114643 879.86 536 522 129.7

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