ASTROSAT CZTI

Data Quality Report

Orbit 23676

Creation date: 2024-06-27T18:57:26.855830
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/AS1A08_004T02_9000003496_23676cztM0_level2.evt modeM0/AS1A08_004T02_9000003496_23676cztM0_level2_quad_clean.evt
Size (bytes)240,598,08061,511,040
Size229.5 MB 58.7 MB
Events in quadrant A1,540,141413,332
Events in quadrant B1,920,146411,870
Events in quadrant C1,494,532404,202
Events in quadrant D2,098,202391,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070080
B079050
C068580
D084770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3411100.293169%
B3412702.051583%
C341270.205158%
D3412812.373974%

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 3411 3411 5 5 0.15% 0.15%
B 3412 3412 50 50 1.47% 1.47%
C 3412 3412 0 0 0.00% 0.00%
D 3412 3412 72 72 2.11% 2.11%

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 12 96 68648 867.85 381 372 78.7
A 13 254 6902 83.0 381 372 78.7
A 0 226 3382 38.26 381 372 78.7
B 3 64 229666 3172.91 374 366 72.3
B 0 189 116954 1613.27 374 366 72.3
B 15 32 28900 394.84 374 366 72.3
C 14 238 57457 667.5 359 360 85.5
C 8 208 8159 91.18 359 360 85.5
C 7 247 7499 83.46 359 360 85.5
D 7 238 184764 2061.0 362 350 89.5
D 12 235 160168 1786.12 362 350 89.5
D 12 233 145632 1623.66 362 350 89.5

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