ASTROSAT CZTI

Data Quality Report

Orbit 41204

Creation date: 2024-06-27T22:25:53.122695
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/AS1A12_089T12_9000005626_41204cztM0_level2.fits modeM0/AS1A12_089T12_9000005626_41204cztM0_level2_quad_clean.evt
Size (bytes)318,067,20068,662,080
Size303.3 MB 65.5 MB
Events in quadrant A2,226,967485,734
Events in quadrant B3,861,313407,126
Events in quadrant C2,316,036461,187
Events in quadrant D3,024,845414,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093491
B0146131
C098581
D0123201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A441490.203897%
B441487019.710014%
C44141102.492071%
D44142986.751246%

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 4414 4414 3 3 0.07% 0.07%
B 4414 4414 598 598 13.55% 13.55%
C 4414 4414 106 106 2.40% 2.40%
D 4414 4414 281 281 6.37% 6.37%

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 10 83 368042 3784.35 469 461 97.1
A 12 189 39488 401.79 469 461 97.1
A 13 254 6453 61.69 469 461 97.1
B 5 255 1721240 20957.55 417 406 82.1
B 0 229 459263 5588.29 417 406 82.1
B 5 185 22155 264.87 417 406 82.1
C 0 10 260794 2438.83 454 458 106.7
C 15 214 180295 1684.71 454 458 106.7
C 14 254 99882 931.4 454 458 106.7
D 12 16 798502 7182.97 447 434 111.1
D 13 249 359663 3233.22 447 434 111.1
D 2 249 88631 793.81 447 434 111.1

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