ASTROSAT CZTI

Data Quality Report

Orbit 16938

Creation date: 2024-06-27T17:29:44.913019
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/AS1T03_013T01_9000002514_16938cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16938cztM0_level2_quad_clean.evt
Size (bytes)284,693,76047,208,960
Size271.5 MB 45.0 MB
Events in quadrant A2,158,575290,599
Events in quadrant B1,938,519292,593
Events in quadrant C1,922,789281,377
Events in quadrant D2,325,508278,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091560
B083950
C082330
D098010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4053581.431039%
B4053110.271404%
C4053110.271404%
D405430.074001%

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 4054 4054 43 43 1.06% 1.06%
B 4054 4054 6 6 0.15% 0.15%
C 4054 4054 0 0 0.00% 0.00%
D 4055 4055 1 1 0.02% 0.02%

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 15 174 377294 3970.52 461 452 94.9
A 0 23 6018 58.65 461 452 94.9
A 0 226 4340 40.97 461 452 94.9
B 0 197 39115 442.33 458 448 87.4
B 0 230 33305 375.87 458 448 87.4
B 0 229 23414 262.72 458 448 87.4
C 3 233 127360 1214.79 442 445 104.5
C 14 238 69744 663.31 442 445 104.5
C 13 61 3198 26.35 442 445 104.5
D 1 52 539826 4893.7 450 436 110.2
D 12 225 26658 237.9 450 436 110.2
D 2 152 22231 197.74 450 436 110.2

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