ASTROSAT CZTI

Data Quality Report

Orbit 35314

Creation date: 2022-04-10T07:10:51.278511
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/AS1T05_023T01_9000005058_35314cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35314cztM0_level2_quad_clean.evt
Size (bytes)1,636,640,640192,170,880
Size1.5 GB 183.3 MB
Events in quadrant A8,010,0581,239,682
Events in quadrant B19,063,4731,086,408
Events in quadrant C9,228,9131,246,489
Events in quadrant D12,209,6261,165,492

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343195
B0675124
C0375454
D0468744

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15661870.555520%
B15661409126.122214%
C156612081.328140%
D156618665.529660%

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 21184 15665 43 43 0.20% 0.27%
B 21184 15665 3091 3091 14.59% 19.73%
C 21184 15665 172 172 0.81% 1.10%
D 21184 15665 826 826 3.90% 5.27%

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 15 169 799869 2258.36 1764 1730 353.4
A 10 83 220466 618.92 1764 1730 353.4
A 9 143 59259 162.78 1764 1730 353.4
B 5 236 8469313 27927.89 1580 1530 303.2
B 5 172 4230168 13946.62 1580 1530 303.2
B 4 232 77935 251.99 1580 1530 303.2
C 0 10 851193 2150.76 1720 1735 395.0
C 15 214 640253 1616.68 1720 1735 395.0
C 4 254 507711 1281.09 1720 1735 395.0
D 8 195 1584491 3908.21 1684 1641 405.0
D 2 249 1073936 2647.6 1684 1641 405.0
D 12 235 911409 2246.3 1684 1641 405.0

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