ASTROSAT CZTI

Data Quality Report

Orbit 49751

Creation date: 2024-12-09T10:56:15.825103
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/AS1A13_037T01_9000006440_49751cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49751cztM0_level2_quad_clean.evt
Size (bytes)1,126,241,28046,952,640
Size1.0 GB 44.8 MB
Events in quadrant A13,322,313176,781
Events in quadrant B4,932,748584,680
Events in quadrant C9,985,20540,240
Events in quadrant D12,998,628211,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435194
B0186131
C0337251
D0426811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5841450377.092964%
B58425719.774050%
C5842551494.385484%
D5842381465.285861%

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 6940 5840 4756 4756 68.53% 81.44%
B 6942 5842 409 409 5.89% 7.00%
C 6941 5841 1460 1460 21.03% 25.00%
D 6942 5842 3939 3939 56.74% 67.43%

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 7377569 54895.78 509 497 134.4
A 3 84 717797 5337.72 509 497 134.4
A 12 50 655766 4876.12 509 497 134.4
B 1 207 1634174 12203.65 630 608 133.9
B 4 206 277026 2065.0 630 608 133.9
B 4 21 226374 1686.6 630 608 133.9
C 15 180 4316842 113599.74 110 108 38.0
C 15 181 1197875 31520.59 110 108 38.0
C 15 163 846668 22278.18 110 108 38.0
D 15 168 2646780 19611.89 432 416 134.9
D 12 6 1408280 10433.51 432 416 134.9
D 15 185 1236856 9163.11 432 416 134.9

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