ASTROSAT CZTI

Data Quality Report

Orbit 27217

Creation date: 2024-06-27T19:37:50.342684
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_243T01_9000003918_27217cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27217cztM0_level2_quad_clean.evt
Size (bytes)567,806,400107,988,480
Size541.5 MB 103.0 MB
Events in quadrant A3,921,416693,798
Events in quadrant B3,978,457706,241
Events in quadrant C3,842,941672,876
Events in quadrant D4,921,804652,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167470
B0167640
C0164290
D0199300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78261361.737797%
B78272172.772454%
C78271992.542481%
D78273334.254504%

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 8476 7829 4 4 0.05% 0.05%
B 8476 7829 19 19 0.22% 0.24%
C 8476 7829 4 4 0.05% 0.05%
D 8477 7830 182 182 2.15% 2.32%

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 14 235 106212 528.42 979 955 199.2
A 13 248 18124 86.19 979 955 199.2
A 8 192 13157 61.26 979 955 199.2
B 5 172 74144 387.87 974 949 188.7
B 15 33 47120 244.67 974 949 188.7
B 12 111 23000 116.85 974 949 188.7
C 14 238 147829 663.99 935 942 221.2
C 15 208 37537 165.42 935 942 221.2
C 13 61 6348 24.44 935 942 221.2
D 1 52 813947 3451.46 930 910 235.6
D 2 250 165418 698.36 930 910 235.6
D 12 233 142286 600.16 930 910 235.6

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