ASTROSAT CZTI

Data Quality Report

Orbit 00883

Creation date: 2024-06-27T14:04:14.970661
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_889T01_9000000158_00883cztM0_level2.evt modeM0/AS1P01_889T01_9000000158_00883cztM0_level2_quad_clean.evt
Size (bytes)326,139,84033,410,880
Size311.0 MB 31.9 MB
Events in quadrant A2,135,400221,045
Events in quadrant B3,570,907201,992
Events in quadrant C2,010,881222,539
Events in quadrant D2,021,484217,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078000
B0120950
C074500
D074690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204600.000000%
B204634216.715543%
C204610.048876%
D204640.195503%

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 2045 2045 7 7 0.34% 0.34%
B 2045 2045 650 650 31.78% 31.78%
C 2045 2045 7 7 0.34% 0.34%
D 2045 2045 21 21 1.03% 1.03%

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 14 170 3760 24.13 554 559 132.7
A 3 80 3663 23.4 554 559 132.7
A 11 79 2292 13.06 554 559 132.7
B 3 0 1192192 9225.56 544 548 129.2
B 8 38 235825 1821.49 544 548 129.2
B 4 222 23493 177.64 544 548 129.2
C 2 53 18363 129.03 502 518 138.3
C 3 111 8798 59.87 502 518 138.3
C 3 79 7285 48.93 502 518 138.3
D 13 170 126058 832.74 490 505 150.8
D 1 4 26614 173.17 490 505 150.8
D 13 13 10140 63.91 490 505 150.8

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