ASTROSAT CZTI

Data Quality Report

Orbit 25075

Creation date: 2024-06-27T19:13:32.716519
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/AS1T03_206T01_9000003672_25075cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25075cztM0_level2_quad_clean.evt
Size (bytes)620,003,52082,903,680
Size591.3 MB 79.1 MB
Events in quadrant A3,842,817504,482
Events in quadrant B3,918,606514,186
Events in quadrant C3,894,453484,626
Events in quadrant D6,592,022458,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164563
B0165603
C0165143
D0248013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79003854.873418%
B79014255.379066%
C79014265.391723%
D790088011.139241%

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 8375 7902 0 0 0.00% 0.00%
B 8376 7904 0 0 0.00% 0.00%
C 8376 7904 0 0 0.00% 0.00%
D 8375 7903 461 461 5.50% 5.83%

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 12402 56.92 993 968 200.9
A 3 137 9705 43.49 993 968 200.9
A 0 226 8541 37.7 993 968 200.9
B 12 111 24204 121.14 990 962 191.9
B 11 111 21694 108.05 990 962 191.9
B 3 64 20589 102.29 990 962 191.9
C 14 238 150141 662.21 953 955 225.3
C 7 247 12464 51.09 953 955 225.3
C 3 233 10541 42.55 953 955 225.3
D 9 35 1984990 8722.67 931 902 227.5
D 8 195 475260 2085.43 931 902 227.5
D 1 52 399301 1751.49 931 902 227.5

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