ASTROSAT CZTI

Data Quality Report

Orbit 33341

Creation date: 2024-06-27T20:48:04.850124
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/AS1A10_090T11_9000004784_33341cztM0_level2.evt modeM0/AS1A10_090T11_9000004784_33341cztM0_level2_quad_clean.evt
Size (bytes)683,651,52079,928,640
Size652.0 MB 76.2 MB
Events in quadrant A2,845,455537,712
Events in quadrant B4,071,275528,536
Events in quadrant C7,337,757411,994
Events in quadrant D6,028,222505,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126520
B0160410
C0258410
D0223860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A624560.096077%
B62452093.346677%
C6245160525.700560%
D62452614.179343%

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 7858 6246 3 3 0.04% 0.05%
B 7858 6246 144 144 1.83% 2.31%
C 7858 6246 1543 1543 19.64% 24.70%
D 7858 6246 217 217 2.76% 3.47%

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 14 254 22315 147.84 727 712 146.1
A 13 254 10581 67.54 727 712 146.1
A 13 6 7733 48.05 727 712 146.1
B 0 219 568920 4157.4 721 704 136.7
B 5 172 278883 2035.32 721 704 136.7
B 5 200 125613 913.9 721 704 136.7
C 10 49 3007353 21448.28 603 609 140.2
C 1 23 1522963 10859.55 603 609 140.2
C 15 214 241397 1717.63 603 609 140.2
D 8 195 1854486 10576.6 690 673 175.3
D 2 250 445870 2539.99 690 673 175.3
D 2 249 231382 1316.27 690 673 175.3

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