ASTROSAT CZTI

Data Quality Report

Orbit 07257

Creation date: 2024-06-27T15:17:27.169694
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/AS1G05_246T03_9000000990_07257cztM0_level2.evt modeM0/AS1G05_246T03_9000000990_07257cztM0_level2_quad_clean.evt
Size (bytes)269,199,36042,747,840
Size256.7 MB 40.8 MB
Events in quadrant A1,854,151248,773
Events in quadrant B2,038,486253,735
Events in quadrant C1,817,784252,605
Events in quadrant D2,152,052239,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08761246
B09090257
C08786255
D09821335

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0862
C0862
D0862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A424920.047070%
B4249120.282419%
C424930.070605%
D4249481.129678%

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 4337 4281 0 0 0.00% 0.00%
B 4329 4270 11 11 0.25% 0.26%
C 4341 4276 0 0 0.00% 0.00%
D 4336 4268 43 43 0.99% 1.01%

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 3 1 12159 119.07 472 463 98.2
A 13 14 9354 90.51 472 463 98.2
A 8 15 9251 89.46 472 463 98.2
B 0 214 73010 785.14 475 464 92.4
B 4 239 38506 411.72 475 464 92.4
B 0 228 29953 319.15 475 464 92.4
C 10 22 8411 73.59 461 463 108.0
C 7 190 4551 37.85 461 463 108.0
C 9 68 3988 32.64 461 463 108.0
D 2 216 196368 1709.33 458 444 114.6
D 2 14 152316 1325.0 458 444 114.6
D 2 33 61093 529.13 458 444 114.6

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