ASTROSAT CZTI

Data Quality Report

Orbit 06783

Creation date: 2024-06-27T15:11:37.426686
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/AS1G06_086T02_9000000936_06783cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06783cztM0_level2_quad_clean.evt
Size (bytes)1,595,666,880224,164,800
Size1.5 GB 213.8 MB
Events in quadrant A9,109,2671,374,977
Events in quadrant B9,360,2261,400,023
Events in quadrant C9,738,4031,363,725
Events in quadrant D18,735,1521,240,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298
B0298
C0295
D0297

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460344607
B0461994528
C0476044586
D0770077514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046044
B046040
C045937
D046244

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204421310.640837%
B204801290.629883%
C204592751.344152%
D20360262412.888016%

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 25632 20909 3 3 0.01% 0.01%
B 25632 20951 1 1 0.00% 0.00%
C 25634 20906 118 118 0.46% 0.56%
D 25606 20765 2293 2293 8.95% 11.04%

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 13 248 44260 87.63 2348 2294 478.9
A 0 226 23379 44.03 2348 2294 478.9
A 12 194 22295 41.77 2348 2294 478.9
B 4 81 64582 136.39 2368 2310 456.6
B 3 220 49946 104.33 2368 2310 456.6
B 12 111 47351 98.65 2368 2310 456.6
C 9 247 712703 1344.07 2287 2299 528.5
C 12 16 42980 76.97 2287 2299 528.5
C 8 128 18027 29.76 2287 2299 528.5
D 2 63 7795841 14454.87 2194 2123 539.2
D 8 195 1329684 2462.2 2194 2123 539.2
D 2 152 961025 1778.46 2194 2123 539.2

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