ASTROSAT CZTI

Data Quality Report

Orbit 36177

Creation date: 2022-06-28T12:44:59.514136
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/AS1A10_071T50_9000005166_36177cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36177cztM0_level2_quad_clean.evt
Size (bytes)434,560,32055,995,840
Size414.4 MB 53.4 MB
Events in quadrant A2,618,147338,816
Events in quadrant B3,544,655333,148
Events in quadrant C3,138,499333,969
Events in quadrant D3,499,655318,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108963
B0139172
C0123262
D0138832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5303100.188573%
B53032234.205167%
C5303691.301150%
D53032394.506883%

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 9219 5306 0 0 0.00% 0.00%
B 9219 5306 115 115 1.25% 2.17%
C 9219 5306 57 57 0.62% 1.07%
D 9219 5306 209 209 2.27% 3.94%

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 175793 1389.65 620 606 126.1
A 8 144 35939 280.28 620 606 126.1
A 13 254 9336 69.25 620 606 126.1
B 4 171 577376 4888.84 610 594 118.0
B 5 172 240439 2032.94 610 594 118.0
B 5 236 215781 1823.93 610 594 118.0
C 15 214 243870 1715.74 602 605 141.8
C 0 10 239720 1686.47 602 605 141.8
C 0 207 131919 926.15 602 605 141.8
D 12 233 382571 2582.13 596 579 147.9
D 13 249 333101 2247.73 596 579 147.9
D 1 52 174467 1175.42 596 579 147.9

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