ASTROSAT CZTI

Data Quality Report

Orbit 40625

Creation date: 2024-06-27T22:18:23.235038
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/AS1A12_011T59_9000005552_40625cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40625cztM0_level2_quad_clean.evt
Size (bytes)204,661,44051,393,600
Size195.2 MB 49.0 MB
Events in quadrant A1,726,651366,064
Events in quadrant B2,216,694366,204
Events in quadrant C1,549,122350,595
Events in quadrant D1,816,273232,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072931
B088691
C068701
D078111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339430.088391%
B3394882.592811%
C339480.235710%
D3394111832.940483%

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 3394 3394 1 1 0.03% 0.03%
B 3394 3394 65 65 1.92% 1.92%
C 3394 3394 4 4 0.12% 0.12%
D 3394 3394 16 16 0.47% 0.47%

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 294734 3903.81 360 352 75.4
A 2 79 28402 371.97 360 352 75.4
A 12 189 4442 54.23 360 352 75.4
B 0 190 482832 6945.38 353 345 69.5
B 0 229 157045 2255.69 353 345 69.5
B 5 255 100880 1447.2 353 345 69.5
C 15 214 145498 1746.78 353 354 83.1
C 0 10 17519 206.58 353 354 83.1
C 14 254 4968 55.53 353 354 83.1
D 12 191 221674 3145.87 286 278 70.4
D 2 153 129643 1838.18 286 278 70.4
D 2 250 129581 1837.3 286 278 70.4

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