ASTROSAT CZTI

Data Quality Report

Orbit 41941

Creation date: 2024-06-27T22:34:46.079600
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_099T03_9000005720_41941cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41941cztM0_level2_quad_clean.evt
Size (bytes)305,190,72088,191,360
Size291.1 MB 84.1 MB
Events in quadrant A2,802,744591,553
Events in quadrant B2,657,915593,528
Events in quadrant C2,506,522582,944
Events in quadrant D2,916,955531,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115093
B0117272
C0109662
D0124312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5298120.226501%
B5298931.755379%
C529870.132125%
D52981212.283881%

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 7180 5299 7 7 0.10% 0.13%
B 7180 5299 74 74 1.03% 1.40%
C 7180 5299 2 2 0.03% 0.04%
D 7180 5299 125 125 1.74% 2.36%

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 520763 4378.33 577 566 118.8
A 2 79 37367 309.74 577 566 118.8
A 7 3 10011 79.5 577 566 118.8
B 0 229 309263 2823.04 561 546 109.4
B 5 255 101662 924.65 561 546 109.4
B 0 190 29561 265.33 561 546 109.4
C 15 214 219357 1686.29 559 562 129.7
C 14 254 98271 753.06 559 562 129.7
C 3 233 8733 62.98 559 562 129.7
D 2 249 318375 2332.84 559 544 136.2
D 13 249 154744 1131.81 559 544 136.2
D 12 218 75118 547.36 559 544 136.2

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