ASTROSAT CZTI

Data Quality Report

Orbit 22853

Creation date: 2024-06-27T18:46:37.155880
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/AS1A07_054T01_9000003378_22853cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22853cztM0_level2_quad_clean.evt
Size (bytes)491,610,240132,194,880
Size468.8 MB 126.1 MB
Events in quadrant A3,329,609919,948
Events in quadrant B3,194,196932,270
Events in quadrant C3,113,226880,371
Events in quadrant D4,804,801812,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139152
B0137262
C0135692
D0187374

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573150.228206%
B6573280.425985%
C6573500.760688%
D65725748.734023%

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 7753 6574 0 0 0.00% 0.00%
B 7753 6574 0 0 0.00% 0.00%
C 7753 6574 0 0 0.00% 0.00%
D 7751 6570 470 470 6.06% 7.15%

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 13 252 186216 1165.59 803 788 159.1
A 4 2 41770 257.61 803 788 159.1
A 13 254 11316 66.18 803 788 159.1
B 0 190 21699 140.37 803 785 149.0
B 12 111 17565 112.62 803 785 149.0
B 11 111 15518 98.89 803 785 149.0
C 14 238 126512 718.4 764 769 175.0
C 7 247 6781 34.35 764 769 175.0
C 13 61 5420 26.57 764 769 175.0
D 7 238 1422833 8068.41 734 712 176.3
D 1 52 299695 1696.28 734 712 176.3
D 13 153 174534 986.18 734 712 176.3

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