ASTROSAT CZTI

Data Quality Report

Orbit 34277

Creation date: 2022-01-30T03:09:11.153060
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/AS1T04_086T01_9000004890_34277cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34277cztM0_level2_quad_clean.evt
Size (bytes)480,300,48063,852,480
Size458.1 MB 60.9 MB
Events in quadrant A2,537,046406,654
Events in quadrant B3,794,665398,659
Events in quadrant C2,882,046416,491
Events in quadrant D4,998,266365,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105263
B0143672
C0113622
D0181862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492760.121778%
B49274569.255125%
C4927561.136594%
D492752010.554090%

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 6990 4928 1 1 0.01% 0.02%
B 6990 4928 307 307 4.39% 6.23%
C 6990 4928 39 39 0.56% 0.79%
D 6990 4928 502 502 7.18% 10.19%

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 47 101049 824.55 611 600 121.8
A 9 143 27441 220.33 611 600 121.8
A 10 83 26413 211.89 611 600 121.8
B 5 172 1268322 11242.06 598 584 112.8
B 0 182 58435 513.01 598 584 112.8
B 0 229 48965 429.03 598 584 112.8
C 15 214 214532 1517.74 613 620 140.9
C 0 10 155973 1102.26 613 620 140.9
C 14 254 59427 417.25 613 620 140.9
D 7 223 1234533 8011.8 575 567 154.0
D 12 235 576422 3738.87 575 567 154.0
D 8 195 447036 2898.8 575 567 154.0

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