ASTROSAT CZTI

Data Quality Report

Orbit 35539

Creation date: 2024-06-27T21:14:47.757940
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/AS1A11_046T08_9000005088_35539cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35539cztM0_level2_quad_clean.evt
Size (bytes)501,670,08078,629,760
Size478.4 MB 75.0 MB
Events in quadrant A2,694,592506,962
Events in quadrant B3,293,510506,015
Events in quadrant C2,911,142525,757
Events in quadrant D5,940,767477,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115053
B0133772
C0117732
D0212692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5209861.650989%
B52093075.893646%
C52091222.342100%
D520982815.895565%

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 7271 5210 49 49 0.67% 0.94%
B 7271 5210 205 205 2.82% 3.93%
C 7271 5210 93 93 1.28% 1.79%
D 7271 5210 773 773 10.63% 14.84%

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 15 237 206958 1766.74 581 571 116.8
A 10 83 139136 1186.16 581 571 116.8
A 15 169 53370 451.98 581 571 116.8
B 5 236 529995 4854.78 574 559 109.1
B 5 200 311939 2855.27 574 559 109.1
B 5 172 76643 697.67 574 559 109.1
C 0 10 350594 2716.52 571 576 128.8
C 15 214 232233 1797.91 571 576 128.8
C 0 239 40954 313.38 571 576 128.8
D 12 235 3348109 25896.9 535 521 129.3
D 13 249 138250 1065.47 535 521 129.3
D 8 195 105051 808.64 535 521 129.3

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