ASTROSAT CZTI

Data Quality Report

Orbit 38914

Creation date: 2024-06-27T21:58:06.687092
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/AS1T05_064T01_9000005416_38914cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38914cztM0_level2_quad_clean.evt
Size (bytes)372,352,32091,681,920
Size355.1 MB 87.4 MB
Events in quadrant A3,045,974617,789
Events in quadrant B2,473,800637,469
Events in quadrant C2,584,763619,074
Events in quadrant D5,245,332512,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125873
B0112972
C0112292
D0194082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5565210.377358%
B556580.143756%
C556550.089847%
D556570612.686433%

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 7328 5566 13 13 0.18% 0.23%
B 7328 5566 4 4 0.05% 0.07%
C 7328 5566 1 1 0.01% 0.02%
D 7328 5566 707 707 9.65% 12.70%

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 415507 3379.39 601 588 122.8
A 12 16 148929 1208.19 601 588 122.8
A 13 248 105852 857.34 601 588 122.8
B 5 172 32138 270.2 601 583 116.8
B 0 190 26107 218.55 601 583 116.8
B 0 230 23371 195.13 601 583 116.8
C 15 214 244024 1764.24 593 596 138.0
C 1 23 9388 63.72 593 596 138.0
C 0 10 7263 48.32 593 596 138.0
D 12 227 1215009 8961.35 555 538 135.5
D 2 249 519761 3831.25 555 538 135.5
D 10 118 369151 2719.93 555 538 135.5

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