ASTROSAT CZTI

Data Quality Report

Orbit 31303

Creation date: 2024-06-27T20:26:24.179804
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/AS1A10_058T08_9000004532_31303cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31303cztM0_level2_quad_clean.evt
Size (bytes)1,132,853,760170,354,880
Size1.1 GB 162.5 MB
Events in quadrant A6,324,1851,093,542
Events in quadrant B10,426,0601,083,803
Events in quadrant C9,748,2821,023,788
Events in quadrant D6,914,3681,041,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274623
B0408613
C0380113
D0296263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13280810.609940%
B132803782.846386%
C1328010728.072289%
D132801401.054217%

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 15020 13283 0 0 0.00% 0.00%
B 15020 13283 33 33 0.22% 0.25%
C 15020 13283 46 46 0.31% 0.35%
D 15020 13283 51 51 0.34% 0.38%

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 13 254 24770 70.64 1635 1600 328.0
A 3 137 17191 47.54 1635 1600 328.0
A 0 226 13388 35.94 1635 1600 328.0
B 6 159 3684586 11884.86 1607 1562 309.9
B 4 80 358466 1151.7 1607 1562 309.9
B 12 111 39486 122.38 1607 1562 309.9
C 3 233 3177057 8836.07 1530 1537 359.4
C 14 238 347655 963.09 1530 1537 359.4
C 14 254 150140 413.5 1530 1537 359.4
D 8 195 519258 1262.53 1563 1534 410.1
D 12 233 255121 618.4 1563 1534 410.1
D 2 250 114412 275.27 1563 1534 410.1

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