ASTROSAT CZTI

Data Quality Report

Orbit 24967

Creation date: 2024-06-27T19:12:03.791499
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_200T01_9000003654_24967cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24967cztM0_level2_quad_clean.evt
Size (bytes)449,683,200133,274,880
Size428.9 MB 127.1 MB
Events in quadrant A3,020,332904,173
Events in quadrant B3,310,082938,563
Events in quadrant C3,392,134896,244
Events in quadrant D3,471,948862,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131222
B0138192
C0142002
D0146473

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238120.192369%
B6238460.737416%
C62381352.164155%
D6237380.609267%

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 7523 6239 0 0 0.00% 0.00%
B 7523 6239 12 12 0.16% 0.19%
C 7523 6239 44 44 0.58% 0.71%
D 7522 6238 8 8 0.11% 0.13%

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 5 203 9971 59.15 780 767 155.6
A 13 254 9359 55.22 780 767 155.6
A 0 226 6657 37.85 780 767 155.6
B 3 64 112603 772.86 792 773 144.7
B 0 190 46725 317.58 792 773 144.7
B 5 172 20256 134.65 792 773 144.7
C 7 247 222166 1263.54 764 769 175.2
C 14 238 123999 703.29 764 769 175.2
C 0 10 31479 175.27 764 769 175.2
D 1 52 418222 2272.43 765 743 183.7
D 8 195 111976 605.47 765 743 183.7
D 2 234 23711 125.02 765 743 183.7

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