ASTROSAT CZTI

Data Quality Report

Orbit 08251

Creation date: 2024-06-27T15:30:08.848533
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/AS1G07_086T02_9000001144_08251cztM0_level2.evt modeM0/AS1G07_086T02_9000001144_08251cztM0_level2_quad_clean.evt
Size (bytes)183,049,92032,875,200
Size174.6 MB 31.4 MB
Events in quadrant A1,338,294204,983
Events in quadrant B1,410,717207,646
Events in quadrant C1,311,601202,014
Events in quadrant D1,306,611196,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055415
B057244
C054963
D055521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25681295.023364%
B25681385.373832%
C2568973.777259%
D25691104.281822%

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 3714 2569 0 0 0.00% 0.00%
B 3714 2569 5 5 0.13% 0.19%
C 3714 2570 0 0 0.00% 0.00%
D 3714 2569 3 3 0.08% 0.12%

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 8 15 4098 51.35 346 337 73.2
A 12 194 3255 39.84 346 337 73.2
A 0 226 3187 38.91 346 337 73.2
B 10 16 44879 651.54 345 337 68.4
B 0 214 16916 242.51 345 337 68.4
B 12 111 7236 100.91 345 337 68.4
C 13 61 2579 28.53 335 335 78.6
C 12 4 2166 23.28 335 335 78.6
C 3 202 797 5.87 335 335 78.6
D 13 105 13643 150.34 336 327 88.6
D 3 14 10333 112.97 336 327 88.6
D 2 234 8702 94.55 336 327 88.6

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