ASTROSAT CZTI

Data Quality Report

Orbit 14391

Creation date: 2024-06-27T16:54:29.066529
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_075T01_9000002120_14391cztM0_level2.evt modeM0/AS1G08_075T01_9000002120_14391cztM0_level2_quad_clean.evt
Size (bytes)595,221,12099,342,720
Size567.6 MB 94.7 MB
Events in quadrant A3,839,236634,082
Events in quadrant B4,123,875624,626
Events in quadrant C4,225,134617,833
Events in quadrant D5,308,339588,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163653
B0171622
C0169272
D0211732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78003124.000000%
B78003594.602564%
C78002653.397436%
D78016688.563005%

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 7956 7801 4 4 0.05% 0.05%
B 7956 7801 20 20 0.25% 0.26%
C 7956 7801 0 0 0.00% 0.00%
D 7957 7802 364 364 4.57% 4.67%

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 15 65624 324.39 973 951 199.4
A 15 69 12556 58.21 973 951 199.4
A 3 1 9655 43.66 973 951 199.4
B 0 229 135123 718.42 959 934 186.8
B 4 173 84392 446.81 959 934 186.8
B 0 189 69724 368.29 959 934 186.8
C 3 233 579293 2653.24 934 936 218.0
C 13 61 6601 25.99 934 936 218.0
C 8 128 5205 19.58 934 936 218.0
D 12 110 887229 3975.92 918 897 222.9
D 10 199 444058 1987.94 918 897 222.9
D 2 120 379211 1697.05 918 897 222.9

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