ASTROSAT CZTI

Data Quality Report

Orbit 44860

Creation date: 2024-06-27T23:07:19.584595
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/AS1A13_017T01_9000006028_44860cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44860cztM0_level2_quad_clean.evt
Size (bytes)447,814,080100,333,440
Size427.1 MB 95.7 MB
Events in quadrant A4,845,275661,780
Events in quadrant B2,954,431694,495
Events in quadrant C3,293,009654,094
Events in quadrant D4,990,626584,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198511
B0132711
C0141931
D0192801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63511872.944418%
B6352671.054786%
C6351891.401354%
D63513074.833884%

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 7181 6352 51 51 0.71% 0.80%
B 7182 6353 3 3 0.04% 0.05%
C 7181 6352 45 45 0.63% 0.71%
D 7181 6352 235 235 3.27% 3.70%

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 1925346 13144.54 699 684 146.4
A 13 248 198563 1351.42 699 684 146.4
A 7 3 11590 74.48 699 684 146.4
B 0 183 78920 567.13 696 674 138.0
B 5 255 58982 422.62 696 674 138.0
B 0 190 35277 250.8 696 674 138.0
C 0 64 298093 1855.45 683 687 160.3
C 14 254 140613 872.97 683 687 160.3
C 1 3 110516 685.2 683 687 160.3
D 13 174 698659 4114.98 674 652 169.6
D 5 235 489410 2881.39 674 652 169.6
D 1 52 338514 1991.81 674 652 169.6

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