ASTROSAT CZTI

Data Quality Report

Orbit 11556

Creation date: 2024-06-27T16:14:50.389841
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/AS1G08_009T01_9000001696_11556cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11556cztM0_level2_quad_clean.evt
Size (bytes)713,050,56095,512,320
Size680.0 MB 91.1 MB
Events in quadrant A5,320,817595,396
Events in quadrant B5,723,619597,097
Events in quadrant C3,407,659621,143
Events in quadrant D6,626,988547,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209463
B0221612
C0156222
D0249222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76244896.413956%
B76246358.328961%
C7624410.537775%
D762484711.109654%

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 8225 7627 203 203 2.47% 2.66%
B 8225 7627 278 278 3.38% 3.64%
C 8225 7627 0 0 0.00% 0.00%
D 8225 7627 679 679 8.26% 8.90%

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 8 5 1498713 8377.09 870 851 178.8
A 1 162 154604 859.89 870 851 178.8
A 1 178 93014 515.44 870 851 178.8
B 4 239 1380650 8105.22 882 861 170.2
B 15 204 573073 3361.31 882 861 170.2
B 3 64 154888 904.79 882 861 170.2
C 13 61 6435 27.2 874 876 204.4
C 3 202 2208 6.52 874 876 204.4
C -1 -1 -1 -1.0 874 876 204.4
D 13 137 1426822 7054.04 831 804 202.2
D 12 221 1074322 5310.34 831 804 202.2
D 1 52 495423 2446.72 831 804 202.2

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