ASTROSAT CZTI

Data Quality Report

Orbit 00832

Creation date: 2024-06-27T14:03:33.515869
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_156T01_9000000114_00832cztM0_level2.evt modeM0/AS1P01_156T01_9000000114_00832cztM0_level2_quad_clean.evt
Size (bytes)1,131,272,64053,775,360
Size1.1 GB 51.3 MB
Events in quadrant A8,211,132293,944
Events in quadrant B8,554,038296,614
Events in quadrant C7,947,075290,232
Events in quadrant D9,103,028278,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291811
B0301971
C0283991
D03194611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727490.728408%
B6727560.832466%
C6727420.624350%
D67266079.024680%

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 7277 6727 236 236 3.24% 3.51%
B 7277 6727 270 270 3.71% 4.01%
C 7277 6727 172 172 2.36% 2.56%
D 7276 6726 906 906 12.45% 13.47%

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 17 40987 75.24 2125 2144 516.2
A 3 80 12082 19.25 2125 2144 516.2
A 0 214 8745 12.79 2125 2144 516.2
B 2 2 87121 163.79 2190 2204 518.5
B 5 249 48926 90.12 2190 2204 518.5
B 8 219 31399 56.31 2190 2204 518.5
C 15 241 44364 75.17 2001 2073 562.6
C 3 111 30447 50.43 2001 2073 562.6
C 3 79 20515 32.78 2001 2073 562.6
D 7 70 1779668 3023.73 1877 1948 587.9
D 2 16 63406 104.53 1877 1948 587.9
D 13 200 53029 86.88 1877 1948 587.9

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