ASTROSAT CZTI

Data Quality Report

Orbit 13686

Creation date: 2024-06-27T16:44:32.322514
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_070T01_9000002028_13686cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13686cztM0_level2_quad_clean.evt
Size (bytes)1,069,421,760167,785,920
Size1019.9 MB 160.0 MB
Events in quadrant A6,300,3561,073,907
Events in quadrant B7,081,9091,144,363
Events in quadrant C6,440,3741,024,937
Events in quadrant D11,677,276930,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271794
B0291893
C0271173
D0435183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131501270.965779%
B131502091.589354%
C13150830.631179%
D13150136110.349810%

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 14856 13154 5 5 0.03% 0.04%
B 14856 13154 38 38 0.26% 0.29%
C 14856 13154 4 4 0.03% 0.03%
D 14856 13154 1088 1088 7.32% 8.27%

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 69 82016 245.12 1611 1577 328.2
A 0 226 14250 38.62 1611 1577 328.2
A 8 15 12978 34.74 1611 1577 328.2
B 8 250 255782 822.86 1632 1599 308.9
B 0 219 178494 572.66 1632 1599 308.9
B 10 244 124679 398.44 1632 1599 308.9
C 3 233 350931 969.72 1552 1559 360.3
C 14 234 25305 65.91 1552 1559 360.3
C 13 61 11358 27.2 1552 1559 360.3
D 13 122 2789206 7800.71 1497 1458 357.4
D 5 222 1349393 3771.81 1497 1458 357.4
D 8 195 1077258 3010.32 1497 1458 357.4

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