ASTROSAT CZTI

Data Quality Report

Orbit 16987

Creation date: 2024-06-27T17:30:18.801148
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/AS1A05_143T01_9000002524_16987cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16987cztM0_level2_quad_clean.evt
Size (bytes)715,792,320104,702,400
Size682.6 MB 99.9 MB
Events in quadrant A4,229,264665,923
Events in quadrant B4,526,123673,465
Events in quadrant C5,236,018643,899
Events in quadrant D7,135,829621,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179022
B0185162
C0214292
D0267623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81451491.829343%
B81451471.804788%
C81461551.902774%
D814586810.656845%

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 9771 8148 42 42 0.43% 0.52%
B 9771 8148 20 20 0.20% 0.25%
C 9772 8149 2 2 0.02% 0.02%
D 9771 8148 615 615 6.29% 7.55%

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 15 174 423168 2101.12 989 965 200.9
A 0 226 8718 38.58 989 965 200.9
A 12 194 7363 31.84 989 965 200.9
B 3 64 225935 1177.28 991 966 191.1
B 0 189 121385 630.16 991 966 191.1
B 0 229 74486 384.74 991 966 191.1
C 3 233 1362359 6105.82 953 958 223.0
C 14 238 146120 651.04 953 958 223.0
C 5 112 8595 34.25 953 958 223.0
D 1 52 3524933 15762.76 923 895 223.6
D 15 145 32364 140.76 923 895 223.6
D 2 234 31614 137.4 923 895 223.6

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