ASTROSAT CZTI

Data Quality Report

Orbit 27685

Creation date: 2024-06-27T19:43:02.849731
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/AS1A09_038T37_9000003980_27685cztM0_level2.evt modeM0/AS1A09_038T37_9000003980_27685cztM0_level2_quad_clean.evt
Size (bytes)385,824,96091,261,440
Size368.0 MB 87.0 MB
Events in quadrant A2,230,483618,488
Events in quadrant B2,327,703628,506
Events in quadrant C2,529,417595,565
Events in quadrant D4,258,194571,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100300
B0101560
C0107700
D0160300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498140.080305%
B498180.160610%
C4981721.445493%
D49813236.484642%

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 4981 4981 2 2 0.04% 0.04%
B 4981 4981 3 3 0.06% 0.06%
C 4981 4981 51 51 1.02% 1.02%
D 4981 4981 451 451 9.05% 9.05%

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 13 248 14791 121.14 573 562 117.5
A 13 254 8605 68.48 573 562 117.5
A 3 137 5481 41.88 573 562 117.5
B 5 172 33330 297.33 570 554 110.2
B 0 230 32221 287.27 570 554 110.2
B 12 111 13056 113.41 570 554 110.2
C 8 208 280546 2172.32 544 545 128.9
C 14 238 88715 684.05 544 545 128.9
C 3 233 32665 249.2 544 545 128.9
D 12 2 1551310 11833.25 542 524 131.1
D 1 52 406620 3098.71 542 524 131.1
D 7 80 80800 612.54 542 524 131.1

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