ASTROSAT CZTI

Data Quality Report

Orbit 25216

Creation date: 2024-06-27T19:15:10.603268
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/AS1A07_097T01_9000003692_25216cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25216cztM0_level2_quad_clean.evt
Size (bytes)560,479,68073,546,560
Size534.5 MB 70.1 MB
Events in quadrant A3,431,439461,644
Events in quadrant B4,263,274463,337
Events in quadrant C3,534,738442,186
Events in quadrant D5,324,839427,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140960
B0168060
C0144120
D0203720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61901071.728595%
B61903806.138934%
C61901592.568659%
D61905458.804523%

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 7460 6191 0 0 0.00% 0.00%
B 7460 6191 156 156 2.09% 2.52%
C 7460 6191 0 0 0.00% 0.00%
D 7460 6191 325 325 4.36% 5.25%

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 10735 55.95 889 874 176.2
A 0 226 7599 38.16 889 874 176.2
A 3 137 7487 37.52 889 874 176.2
B 3 64 806122 4940.91 863 844 163.0
B 0 190 28478 169.55 863 844 163.0
B 0 229 24253 143.63 863 844 163.0
C 14 238 137635 693.49 849 857 197.2
C 7 247 45405 225.87 849 857 197.2
C 2 16 25285 123.85 849 857 197.2
D 10 70 730170 3308.0 835 818 220.5
D 8 195 537938 2436.13 835 818 220.5
D 1 52 370870 1678.38 835 818 220.5

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