ASTROSAT CZTI

Data Quality Report

Orbit 20180303_A04_053T05_9000001936_level2

Creation date: 2025-11-19T20:32:52.477883
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/AS1A04_053T05_9000001936cztM0_level2.fits modeM0/AS1A04_053T05_9000001936cztM0_level2_quad_clean.evt
Size (bytes)84,864,96089,075,520
Size80.9 MB 84.9 MB
Events in quadrant A510,782545,470
Events in quadrant B444,858471,836
Events in quadrant C507,758526,656
Events in quadrant D440,616487,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202350
B0315470
C0196710
D0206710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95953273.408025%
B9595180018.759771%
C95951791.865555%
D95952272.365816%

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 9980 9595 0 0 0.00% 0.00%
B 9980 9457 0 0 0.00% 0.00%
C 9980 9595 0 0 0.00% 0.00%
D 9980 9595 0 0 0.00% 0.00%

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 29 500 10.54 133 125 35.6
A 7 110 406 7.89 133 125 35.6
A 0 30 389 7.42 133 125 35.6
B 2 9 383 10.47 117 112 25.9
B 5 232 304 7.42 117 112 25.9
B 14 254 300 7.26 117 112 25.9
C 2 191 372 6.83 134 125 36.2
C 12 241 366 6.66 134 125 36.2
C 9 233 366 6.66 134 125 36.2
D 10 189 329 6.11 125 113 35.3
D 6 231 328 6.08 125 113 35.3
D 1 19 315 5.72 125 113 35.3

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