ASTROSAT CZTI

Data Quality Report

Orbit 37515

Creation date: 2024-06-27T21:40:57.708106
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/AS1A11_030T02_9000005328_37515cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37515cztM0_level2_quad_clean.evt
Size (bytes)1,847,266,560240,048,000
Size1.7 GB 228.9 MB
Events in quadrant A11,558,7231,469,551
Events in quadrant B14,089,9761,448,837
Events in quadrant C12,424,9091,448,442
Events in quadrant D16,346,7821,347,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047918150
B056517251
C050640174
D064083329

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04580
C04600
D04600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22610640.283061%
B226019384.150259%
C226283961.750044%
D2260015806.991150%

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 34559 22680 36 36 0.10% 0.16%
B 34558 22676 725 725 2.10% 3.20%
C 34559 22682 324 324 0.94% 1.43%
D 34559 22675 1499 1499 4.34% 6.61%

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 1032915 1985.92 2580 2529 518.8
A 15 222 194664 370.31 2580 2529 518.8
A 13 248 91704 171.87 2580 2529 518.8
B 5 172 2467483 5088.81 2526 2455 484.4
B 15 35 777655 1600.33 2526 2455 484.4
B 0 213 348152 713.66 2526 2455 484.4
C 14 254 1427273 2437.17 2505 2531 584.6
C 15 214 949674 1620.19 2505 2531 584.6
C 0 10 144606 243.03 2505 2531 584.6
D 13 249 2385083 4015.67 2442 2377 593.4
D 13 171 1878142 3161.3 2442 2377 593.4
D 2 249 742750 1247.78 2442 2377 593.4

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