ASTROSAT CZTI

Data Quality Report

Orbit 26749

Creation date: 2024-06-27T19:32:24.348007
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/AS1T03_223T01_9000003850_26749cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26749cztM0_level2_quad_clean.evt
Size (bytes)667,961,28074,442,240
Size637.0 MB 71.0 MB
Events in quadrant A2,867,293517,509
Events in quadrant B9,370,133393,901
Events in quadrant C2,851,395496,263
Events in quadrant D4,777,303470,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114460
B0314650
C0114800
D0178540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5366240.447261%
B5367315258.729271%
C5367541.006149%
D53675079.446618%

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 6716 5367 0 0 0.00% 0.00%
B 6717 5368 2541 2541 37.83% 47.34%
C 6717 5368 3 3 0.04% 0.06%
D 6717 5368 387 387 5.76% 7.21%

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 0 13 15993 103.7 736 723 147.3
A 12 96 9960 62.73 736 723 147.3
A 13 254 7929 48.94 736 723 147.3
B 0 189 7195490 71265.59 544 533 101.0
B 10 246 35742 348.74 544 533 101.0
B 3 112 12655 120.07 544 533 101.0
C 14 238 112461 704.86 688 693 158.6
C 15 208 35375 218.72 688 693 158.6
C 2 16 14582 87.59 688 693 158.6
D 7 80 1484682 8683.39 676 656 170.9
D 1 52 522856 3055.52 676 656 170.9
D 12 233 113599 660.86 676 656 170.9

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