ASTROSAT CZTI

Data Quality Report

Orbit 26507

Creation date: 2024-06-27T19:29:53.405078
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/AS1C05_017T01_9000003836_26507cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26507cztM0_level2_quad_clean.evt
Size (bytes)651,055,680108,204,480
Size620.9 MB 103.2 MB
Events in quadrant A3,775,437706,371
Events in quadrant B4,171,477713,198
Events in quadrant C4,015,113687,927
Events in quadrant D7,249,195649,410

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156970
B0170340
C0164050
D0266340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7476901.203852%
B74772182.915608%
C74771812.420757%
D7477114915.367126%

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 8851 7478 0 0 0.00% 0.00%
B 8852 7478 47 47 0.53% 0.63%
C 8852 7478 0 0 0.00% 0.00%
D 8852 7478 828 828 9.35% 11.07%

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 13735 64.52 979 960 198.0
A 3 137 8642 38.8 979 960 198.0
A 0 226 8421 37.68 979 960 198.0
B 5 172 173819 931.23 970 948 185.6
B 0 189 109486 584.67 970 948 185.6
B 0 230 36587 191.98 970 948 185.6
C 3 233 154464 698.49 942 950 219.8
C 14 238 150183 679.01 942 950 219.8
C 4 254 17139 73.66 942 950 219.8
D 1 52 3370154 15411.27 895 877 218.6
D 7 80 227065 1034.6 895 877 218.6
D 12 233 189971 864.93 895 877 218.6

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