ASTROSAT CZTI

Data Quality Report

Orbit 15975

Creation date: 2024-06-27T17:15:57.391403
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/AS1T02_100T01_9000002354_15975cztM0_level2.evt modeM0/AS1T02_100T01_9000002354_15975cztM0_level2_quad_clean.evt
Size (bytes)277,223,04056,361,600
Size264.4 MB 53.8 MB
Events in quadrant A1,994,179359,289
Events in quadrant B2,134,940361,058
Events in quadrant C1,986,920349,361
Events in quadrant D1,997,792345,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086612
B089971
C086561
D087151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4129431.041414%
B4129521.259385%
C4129581.404698%
D4129390.944539%

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 5155 4130 0 0 0.00% 0.00%
B 5155 4130 4 4 0.08% 0.10%
C 5155 4131 0 0 0.00% 0.00%
D 5155 4130 3 3 0.06% 0.07%

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 15 239 21657 202.57 511 499 104.4
A 9 143 7337 65.47 511 499 104.4
A 0 226 4550 38.78 511 499 104.4
B 4 173 34550 345.38 509 496 98.6
B 4 142 28606 285.09 509 496 98.6
B 15 222 14612 143.17 509 496 98.6
C 14 238 76075 660.61 486 487 114.4
C 3 233 8842 73.02 486 487 114.4
C 10 69 4383 34.05 486 487 114.4
D 12 110 61367 500.21 495 480 121.7
D 10 70 24103 194.07 495 480 121.7
D 2 234 17502 139.84 495 480 121.7

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