ASTROSAT CZTI

Data Quality Report

Orbit 24465

Creation date: 2024-06-27T19:06:17.212098
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_183T01_9000003606_24465cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24465cztM0_level2_quad_clean.evt
Size (bytes)726,217,920119,312,640
Size692.6 MB 113.8 MB
Events in quadrant A3,208,576821,500
Events in quadrant B4,427,170821,873
Events in quadrant C6,283,652751,750
Events in quadrant D7,596,374725,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143373
B0177652
C0233462
D0275372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A707990.127137%
B70793394.788812%
C707985412.063851%
D707982211.611810%

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 7874 7080 0 0 0.00% 0.00%
B 7874 7080 152 152 1.93% 2.15%
C 7874 7080 581 581 7.38% 8.21%
D 7874 7080 810 810 10.29% 11.44%

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 11079 61.81 832 817 166.0
A 3 137 7308 39.1 832 817 166.0
A 0 226 7040 37.48 832 817 166.0
B 3 64 882035 5682.2 823 803 155.1
B 5 172 120760 773.48 823 803 155.1
B 7 202 91393 584.12 823 803 155.1
C 7 247 1962487 10843.57 777 779 180.9
C 2 16 1078934 5959.63 777 779 180.9
C 14 238 124480 683.77 777 779 180.9
D 12 218 2585448 13812.07 777 755 187.1
D 1 52 897822 4793.74 777 755 187.1
D 7 238 883776 4718.68 777 755 187.1

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