ASTROSAT CZTI

Data Quality Report

Orbit 27441

Creation date: 2024-06-27T19:40:05.532334
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/AS1T03_249T01_9000003934_27441cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27441cztM0_level2_quad_clean.evt
Size (bytes)1,627,531,200336,070,080
Size1.5 GB 320.5 MB
Events in quadrant A10,913,3622,200,279
Events in quadrant B11,188,2532,191,851
Events in quadrant C11,104,6262,097,753
Events in quadrant D14,496,0602,072,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480610
B0488010
C0485100
D0595490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234981210.514937%
B234991590.676625%
C234992951.255373%
D234996052.574578%

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 26328 23501 2 2 0.01% 0.01%
B 26329 23502 0 0 0.00% 0.00%
C 26329 23501 13 13 0.05% 0.06%
D 26329 23503 432 432 1.64% 1.84%

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 13 254 39338 64.82 2825 2765 564.2
A 3 137 27283 43.45 2825 2765 564.2
A 0 226 23848 37.37 2825 2765 564.2
B 0 190 69945 126.48 2796 2720 531.5
B 12 111 66888 120.73 2796 2720 531.5
B 11 111 60234 108.21 2796 2720 531.5
C 14 238 432168 680.65 2696 2715 630.9
C 10 22 108576 167.78 2696 2715 630.9
C 2 16 30466 43.98 2696 2715 630.9
D 1 52 3406582 5327.68 2705 2637 638.9
D 2 250 506704 788.94 2705 2637 638.9
D 12 227 302916 469.98 2705 2637 638.9

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