ASTROSAT CZTI

Data Quality Report

Orbit 03979

Creation date: 2024-06-27T14:35:55.180398
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_247T01_9000000512_03979cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_03979cztM0_level2_quad_clean.evt
Size (bytes)461,531,520107,262,720
Size440.2 MB 102.3 MB
Events in quadrant A3,294,352712,995
Events in quadrant B4,012,221715,155
Events in quadrant C2,793,838707,841
Events in quadrant D3,452,672676,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139983
B0160462
C0126852
D0147402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244961.537476%
B62442323.715567%
C6244200.320307%
D62441211.937860%

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 7504 6245 46 46 0.61% 0.74%
B 7504 6245 138 138 1.84% 2.21%
C 7504 6245 0 0 0.00% 0.00%
D 7504 6245 76 76 1.01% 1.22%

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 0 50 220486 1482.16 734 719 148.3
A 0 118 62708 418.07 734 719 148.3
A 15 236 62155 414.34 734 719 148.3
B 14 167 938752 6762.98 741 724 138.7
B 4 81 78667 561.95 741 724 138.7
B 3 0 40285 285.23 741 724 138.7
C 13 61 6124 33.47 712 715 161.6
C 7 206 4861 25.65 712 715 161.6
C 9 144 4004 20.35 712 715 161.6
D 2 232 448334 2640.87 704 682 169.5
D 7 53 69616 406.67 704 682 169.5
D 13 248 61469 358.61 704 682 169.5

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