ASTROSAT CZTI

Data Quality Report

Orbit 11545

Creation date: 2024-06-27T16:14:32.241342
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/AS1G08_009T01_9000001692_11545cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11545cztM0_level2_quad_clean.evt
Size (bytes)1,957,484,160207,578,880
Size1.8 GB 198.0 MB
Events in quadrant A16,819,6441,222,078
Events in quadrant B14,260,1691,230,776
Events in quadrant C10,102,0561,211,438
Events in quadrant D16,591,1471,078,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0652775
B0568824
C0454624
D0651224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2240611505.132554%
B2240610674.762117%
C224061110.495403%
D2240618848.408462%

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 25162 22411 550 550 2.19% 2.45%
B 25162 22411 572 572 2.27% 2.55%
C 25162 22411 0 0 0.00% 0.00%
D 25162 22411 1386 1386 5.51% 6.18%

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 8 5 5372379 9991.8 2644 2595 537.4
A 1 162 439871 813.66 2644 2595 537.4
A 1 178 262708 484.0 2644 2595 537.4
B 4 239 3346956 6622.67 2651 2589 505.0
B 15 204 241608 473.32 2651 2589 505.0
B 3 64 114549 221.71 2651 2589 505.0
C 13 61 18886 27.18 2592 2608 598.9
C 3 202 6499 6.5 2592 2608 598.9
C -1 -1 -1 -1.0 2592 2608 598.9
D 13 137 3387106 5684.86 2500 2434 595.4
D 1 52 2763591 4637.61 2500 2434 595.4
D 2 120 672918 1126.14 2500 2434 595.4

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