ASTROSAT CZTI

Data Quality Report

Orbit 00998

Creation date: 2024-06-27T14:05:55.329192
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/AS1P01_998T02_9000000190_00998cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_00998cztM0_level2_quad_clean.evt
Size (bytes)314,654,40033,255,360
Size300.1 MB 31.7 MB
Events in quadrant A2,439,900223,781
Events in quadrant B2,430,982226,897
Events in quadrant C2,207,043216,973
Events in quadrant D2,334,592212,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084791
B084481
C077954
D081761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1729734.222094%
B1729673.875072%
C1728472.719907%
D1729482.776171%

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 2949 1730 149 149 5.05% 8.61%
B 2949 1730 131 131 4.44% 7.57%
C 2948 1729 84 84 2.85% 4.86%
D 2949 1730 114 114 3.87% 6.59%

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 0 253 119796 814.35 600 604 146.4
A 12 243 11328 73.27 600 604 146.4
A 12 189 2614 13.73 600 604 146.4
B 5 6 65164 450.23 599 601 143.4
B 5 249 27429 187.09 599 601 143.4
B 15 85 17949 120.98 599 601 143.4
C 15 241 86246 569.79 538 555 150.4
C 3 79 7496 46.15 538 555 150.4
C 3 111 7266 44.62 538 555 150.4
D 1 4 249468 1420.14 555 571 175.3
D 13 170 3515 16.8 555 571 175.3
D 12 188 3468 16.53 555 571 175.3

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