ASTROSAT CZTI

Data Quality Report

Orbit 15073

Creation date: 2024-06-27T17:03:22.833579
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/AS1T02_060T01_9000002216_15073cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15073cztM0_level2_quad_clean.evt
Size (bytes)618,972,48086,304,960
Size590.3 MB 82.3 MB
Events in quadrant A4,001,186519,161
Events in quadrant B4,088,794528,834
Events in quadrant C6,117,825502,846
Events in quadrant D3,977,830489,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172454
B0173283
C0238843
D0175843

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82573924.747487%
B82574014.856485%
C82575436.576238%
D82573103.754390%

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 8613 8255 0 0 0.00% 0.00%
B 8613 8256 0 0 0.00% 0.00%
C 8613 8254 38 38 0.44% 0.46%
D 8613 8255 13 13 0.15% 0.16%

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 0 226 9008 37.67 1038 1016 212.1
A 12 189 7965 32.76 1038 1016 212.1
A 3 137 7742 31.71 1038 1016 212.1
B 3 64 42581 205.46 1031 1001 202.4
B 12 111 25356 120.35 1031 1001 202.4
B 11 111 22547 106.47 1031 1001 202.4
C 3 233 2224250 9600.49 989 992 231.6
C 3 232 15554 62.88 989 992 231.6
C 3 234 13015 51.92 989 992 231.6
D 13 249 94413 381.57 1003 969 244.9
D 13 104 31402 124.27 1003 969 244.9
D 2 234 28606 112.85 1003 969 244.9

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