ASTROSAT CZTI

Data Quality Report

Orbit 38734

Creation date: 2024-06-27T21:55:44.362349
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_054T01_9000005392_38734cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38734cztM0_level2_quad_clean.evt
Size (bytes)514,944,00088,413,120
Size491.1 MB 84.3 MB
Events in quadrant A2,906,999637,847
Events in quadrant B2,653,700653,122
Events in quadrant C2,671,664620,771
Events in quadrant D10,406,316384,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121183
B0115342
C0113492
D0346532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5442350.643146%
B5442150.275634%
C5442150.275634%
D5442238843.880926%

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 7205 5443 25 25 0.35% 0.46%
B 7205 5443 3 3 0.04% 0.06%
C 7205 5443 8 8 0.11% 0.15%
D 7205 5443 2309 2309 32.05% 42.42%

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 386745 3098.02 616 605 124.6
A 0 8 68679 546.16 616 605 124.6
A 9 143 32738 257.8 616 605 124.6
B 5 184 148285 1231.36 617 602 119.9
B 4 251 33705 276.01 617 602 119.9
B 4 171 25366 206.48 617 602 119.9
C 15 214 225521 1581.93 604 608 142.2
C 14 254 35815 247.63 604 608 142.2
C 0 10 33844 233.77 604 608 142.2
D 2 16 7527765 56108.48 543 527 134.2
D 12 235 261804 1947.57 543 527 134.2
D 10 118 142388 1057.44 543 527 134.2

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