ASTROSAT CZTI

Data Quality Report

Orbit 00888

Creation date: 2024-06-27T14:04:18.459298
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/AS1P01_161T03_9000000178_00888cztM0_level2.evt modeM0/AS1P01_161T03_9000000178_00888cztM0_level2_quad_clean.evt
Size (bytes)1,269,408,96068,184,000
Size1.2 GB 65.0 MB
Events in quadrant A9,011,513401,506
Events in quadrant B11,567,525371,907
Events in quadrant C8,819,332398,199
Events in quadrant D8,554,709375,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320180
B0396250
C0314810
D0306900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7421210.282981%
B74215867.896510%
C7422180.242522%
D74221642.209647%

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 7461 7422 350 350 4.69% 4.72%
B 7461 7422 1422 1422 19.06% 19.16%
C 7462 7423 308 308 4.13% 4.15%
D 7462 7423 394 394 5.28% 5.31%

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 3 80 20109 31.38 2342 2359 565.6
A 11 79 9287 12.25 2342 2359 565.6
A 15 127 8638 11.1 2342 2359 565.6
B 3 0 2216319 3938.05 2377 2394 562.2
B 8 38 158079 276.93 2377 2394 562.2
B 0 220 41645 69.82 2377 2394 562.2
C 15 241 38032 57.14 2232 2319 625.0
C 3 111 29597 43.65 2232 2319 625.0
C 3 79 14977 20.25 2232 2319 625.0
D 1 4 36363 50.98 2222 2244 669.2
D 13 169 21566 28.87 2222 2244 669.2
D 12 188 18763 24.68 2222 2244 669.2

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