ASTROSAT CZTI

Data Quality Report

Orbit 15867

Creation date: 2024-06-27T17:14:33.139825
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/AS1A04_143T01_9000002344_15867cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15867cztM0_level2_quad_clean.evt
Size (bytes)531,529,920106,724,160
Size506.9 MB 101.8 MB
Events in quadrant A3,919,311676,986
Events in quadrant B3,885,177700,266
Events in quadrant C4,209,575659,244
Events in quadrant D3,555,641655,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167973
B0167122
C0173922
D0161842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7772570.733402%
B7772981.260937%
C77722062.650540%
D7772500.643335%

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 9278 7775 15 15 0.16% 0.19%
B 9278 7775 3 3 0.03% 0.04%
C 9278 7775 77 77 0.83% 0.99%
D 9278 7775 9 9 0.10% 0.12%

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 15 239 291272 1516.49 942 921 191.5
A 0 226 8364 38.87 942 921 191.5
A 12 194 6799 30.7 942 921 191.5
B 5 65 88411 479.4 946 923 182.5
B 4 48 27597 146.16 946 923 182.5
B 12 111 22114 116.12 946 923 182.5
C 10 22 434932 2029.29 906 913 213.9
C 14 238 137730 639.7 906 913 213.9
C 3 233 85304 394.58 906 913 213.9
D 2 33 56517 244.64 921 893 227.4
D 2 234 28609 121.9 921 893 227.4
D 2 120 15016 62.11 921 893 227.4

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