ASTROSAT CZTI

Data Quality Report

Orbit 10520

Creation date: 2024-06-27T16:00:25.650162
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/AS1A03_127T02_9000001522_10520cztM0_level2.evt modeM0/AS1A03_127T02_9000001522_10520cztM0_level2_quad_clean.evt
Size (bytes)1,224,515,520230,411,520
Size1.1 GB 219.7 MB
Events in quadrant A6,805,8411,544,792
Events in quadrant B7,750,6531,585,846
Events in quadrant C5,815,7911,641,544
Events in quadrant D15,816,6341,288,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290693
B0318873
C0269863
D0561833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132632782.096057%
B132634993.762346%
C13263480.361909%
D13263337725.461811%

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 14988 13264 210 210 1.40% 1.58%
B 14988 13264 293 293 1.95% 2.21%
C 14988 13264 5 5 0.03% 0.04%
D 14988 13264 3324 3324 22.18% 25.06%

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 15 239 601186 1999.66 1478 1444 299.9
A 13 251 328022 1088.88 1478 1444 299.9
A 14 254 49600 160.56 1478 1444 299.9
B 4 239 1457814 5118.45 1502 1464 284.5
B 11 51 194479 678.37 1502 1464 284.5
B 0 214 98259 340.19 1502 1464 284.5
C 14 234 38658 109.73 1479 1484 338.8
C 13 61 11010 28.12 1479 1484 338.8
C 1 3 7092 16.55 1479 1484 338.8
D 2 16 7979204 27108.3 1239 1203 294.3
D 1 20 1754932 5958.96 1239 1203 294.3
D 8 195 633784 2149.43 1239 1203 294.3

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