ASTROSAT CZTI

Data Quality Report

Orbit 20617

Creation date: 2024-06-27T18:17:30.113486
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/AS1A06_005T02_9000003048_20617cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20617cztM0_level2_quad_clean.evt
Size (bytes)645,353,280110,816,640
Size615.5 MB 105.7 MB
Events in quadrant A4,108,005717,071
Events in quadrant B4,260,456715,837
Events in quadrant C4,791,975687,589
Events in quadrant D5,816,556653,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177302
B0180672
C0195422
D0229163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8375770.919403%
B8376941.122254%
C83761391.659503%
D83755106.089552%

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 9220 8377 31 31 0.34% 0.37%
B 9221 8378 13 13 0.14% 0.16%
C 9221 8378 16 16 0.17% 0.19%
D 9220 8377 412 412 4.47% 4.92%

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 16 194506 951.62 1009 987 203.4
A 12 16 17061 79.04 1009 987 203.4
A 8 205 15172 69.75 1009 987 203.4
B 7 220 109056 556.72 1006 982 194.1
B 0 197 60894 308.62 1006 982 194.1
B 0 190 33924 169.69 1006 982 194.1
C 3 233 433210 1920.67 959 966 225.0
C 3 9 276950 1226.33 959 966 225.0
C 14 238 149287 659.06 959 966 225.0
D 1 52 1171179 5066.34 949 919 231.0
D 5 222 523883 2264.04 949 919 231.0
D 13 153 218004 939.81 949 919 231.0

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