ASTROSAT CZTI

Data Quality Report

Orbit 15206

Creation date: 2024-06-27T17:05:15.525602
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/AS1T02_069T01_9000002242_15206cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15206cztM0_level2_quad_clean.evt
Size (bytes)1,212,108,480185,264,640
Size1.1 GB 176.7 MB
Events in quadrant A7,537,3191,173,103
Events in quadrant B8,858,7731,168,474
Events in quadrant C11,676,9421,104,841
Events in quadrant D7,606,7081,114,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319894
B0359114
C0442084
D0331924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152124002.629503%
B152127194.726532%
C15212199113.088351%
D152124843.181699%

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 16248 15215 10 10 0.06% 0.07%
B 16248 15213 200 200 1.23% 1.31%
C 16248 15215 1098 1098 6.76% 7.22%
D 16248 15215 159 159 0.98% 1.05%

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 12 189 390151 1051.14 1827 1785 369.5
A 13 248 88427 234.5 1827 1785 369.5
A 15 233 21493 53.34 1827 1785 369.5
B 3 112 1048007 3003.35 1813 1767 348.4
B 10 245 191446 544.5 1813 1767 348.4
B 0 229 181727 516.6 1813 1767 348.4
C 3 233 5117459 13122.68 1677 1682 389.8
C 7 247 24531 58.61 1677 1682 389.8
C 13 61 11927 26.28 1677 1682 389.8
D 2 33 499888 1148.8 1772 1719 433.6
D 13 172 137904 314.05 1772 1719 433.6
D 7 38 90593 204.95 1772 1719 433.6

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