ASTROSAT CZTI

Data Quality Report

Orbit 33312

Creation date: 2024-06-27T20:47:22.760347
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/AS1T04_072T01_9000004780_33312cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33312cztM0_level2_quad_clean.evt
Size (bytes)621,515,52074,059,200
Size592.7 MB 70.6 MB
Events in quadrant A2,935,904494,213
Events in quadrant B4,297,024464,605
Events in quadrant C6,838,760411,294
Events in quadrant D4,353,147460,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125053
B0165012
C0241922
D0172302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5883130.220976%
B58833766.391297%
C5883118020.057794%
D58831422.413734%

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 7225 5884 5 5 0.07% 0.08%
B 7225 5884 288 288 3.99% 4.89%
C 7225 5884 1072 1072 14.84% 18.22%
D 7225 5884 116 116 1.61% 1.97%

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 15 169 217954 1563.23 693 679 139.0
A 15 47 26193 183.57 693 679 139.0
A 13 254 9641 64.48 693 679 139.0
B 5 172 1162946 9094.34 670 652 127.8
B 0 219 216166 1686.28 670 652 127.8
B 4 170 148041 1153.24 670 652 127.8
C 1 23 3299918 23018.02 624 629 143.3
C 10 49 432853 3015.48 624 629 143.3
C 15 214 257576 1792.63 624 629 143.3
D 8 195 994909 5792.8 665 648 171.6
D 12 233 182562 1059.87 665 648 171.6
D 13 249 148196 859.65 665 648 171.6

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