ASTROSAT CZTI

Data Quality Report

Orbit 03026

Creation date: 2024-06-27T14:23:36.894045
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/AS1G05_238T02_9000000420_03026cztM0_level2.evt modeM0/AS1G05_238T02_9000000420_03026cztM0_level2_quad_clean.evt
Size (bytes)335,710,08074,257,920
Size320.2 MB 70.8 MB
Events in quadrant A2,345,194482,692
Events in quadrant B2,438,141485,246
Events in quadrant C2,364,471473,375
Events in quadrant D2,682,350460,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100443
B0104172
C0104042
D0113552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494490.182039%
B494490.182039%
C4944120.242718%
D4944581.173139%

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 7099 4945 2 2 0.03% 0.04%
B 7099 4945 8 8 0.11% 0.16%
C 7099 4945 11 11 0.15% 0.22%
D 7099 4945 70 70 0.99% 1.42%

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 83603 723.77 567 555 114.7
A 0 50 38444 330.21 567 555 114.7
A 13 14 17713 149.53 567 555 114.7
B 14 167 79056 720.18 571 559 109.0
B 0 219 72752 662.35 571 559 109.0
B 15 204 26477 237.79 571 559 109.0
C 6 80 69213 535.83 549 552 128.1
C 1 192 33947 260.61 549 552 128.1
C 12 206 30881 236.69 549 552 128.1
D 13 114 461911 3584.2 545 534 128.7
D 2 152 74263 572.76 545 534 128.7
D 2 136 21000 158.99 545 534 128.7

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
Veto Counter