ASTROSAT CZTI

Data Quality Report

Orbit 11075

Creation date: 2024-06-27T16:07:56.389933
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_9000001616_11075cztM0_level2.evt modeM0/AS1G08_075T01_9000001616_11075cztM0_level2_quad_clean.evt
Size (bytes)521,369,28082,537,920
Size497.2 MB 78.7 MB
Events in quadrant A3,666,887524,062
Events in quadrant B4,583,541516,661
Events in quadrant C2,981,028522,222
Events in quadrant D4,124,247489,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149432
B0176882
C0132612
D0164252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63981692.641450%
B63985228.158800%
C6398951.484839%
D63982303.594873%

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 7208 6399 7 7 0.10% 0.11%
B 7208 6399 244 244 3.39% 3.81%
C 7208 6399 0 0 0.00% 0.00%
D 7208 6398 82 82 1.14% 1.28%

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 592497 3656.56 798 781 161.8
A 0 226 7070 38.86 798 781 161.8
A 12 194 6246 33.77 798 781 161.8
B 4 239 1449187 9856.93 774 756 146.9
B 15 204 48087 322.1 774 756 146.9
B 0 214 27597 182.66 774 756 146.9
C 13 61 5641 27.47 764 768 177.4
C 9 204 2186 7.99 764 768 177.4
C 3 202 1856 6.13 764 768 177.4
D 11 129 508492 2782.25 763 742 182.5
D 10 253 282600 1544.46 763 742 182.5
D 8 195 181595 991.0 763 742 182.5

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