ASTROSAT CZTI

Data Quality Report

Orbit 36860

Creation date: 2024-06-27T21:32:29.493018
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/AS1A11_075T01_9000005244_36860cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36860cztM0_level2_quad_clean.evt
Size (bytes)868,443,840141,226,560
Size828.2 MB 134.7 MB
Events in quadrant A7,102,9651,077,922
Events in quadrant B2,275,45518,222
Events in quadrant C7,364,6751,104,635
Events in quadrant D8,525,8541,036,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307784
B0151863
C0312793
D0359263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14998260.173356%
B1499814998100.000000%
C14998510.340045%
D149983172.113615%

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 19387 15001 8 8 0.04% 0.05%
B 19386 14997 0 0 0.00% 0.00%
C 19387 15001 39 39 0.20% 0.26%
D 19387 15001 298 298 1.54% 1.99%

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 10 83 508042 1509.88 1664 1631 335.4
A 9 143 93203 273.03 1664 1631 335.4
A 13 6 41989 120.33 1664 1631 335.4
B 12 243 2081231 241191.06 33 32 8.6
B 12 144 39295 4550.21 33 32 8.6
B 0 213 5640 649.91 33 32 8.6
C 15 214 636128 1696.43 1618 1630 374.0
C 0 10 208217 552.34 1618 1630 374.0
C 3 233 104729 275.65 1618 1630 374.0
D 13 249 451497 1147.45 1613 1569 392.1
D 2 153 445232 1131.47 1613 1569 392.1
D 2 249 441258 1121.34 1613 1569 392.1

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