ASTROSAT CZTI

Data Quality Report

Orbit 42787

Creation date: 2024-06-27T22:44:13.838038
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/AS1A05_013T01_9000005822_42787cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42787cztM0_level2_quad_clean.evt
Size (bytes)941,581,440254,790,720
Size898.0 MB 243.0 MB
Events in quadrant A8,504,0101,709,188
Events in quadrant B8,602,4221,662,316
Events in quadrant C7,278,9471,700,230
Events in quadrant D9,267,6391,572,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340953
B0361693
C0314673
D0385153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15505390.251532%
B155044222.721878%
C1550580.051596%
D155053282.115447%

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 19686 15508 18 18 0.09% 0.12%
B 19685 15507 387 387 1.97% 2.50%
C 19686 15508 3 3 0.02% 0.02%
D 19686 15508 339 339 1.72% 2.19%

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 1545954 4365.59 1723 1687 353.7
A 15 223 124722 347.82 1723 1687 353.7
A 12 189 71118 196.28 1723 1687 353.7
B 10 247 1211700 3723.48 1671 1623 325.0
B 0 229 528222 1620.38 1671 1623 325.0
B 10 246 81149 244.71 1671 1623 325.0
C 15 214 622801 1583.4 1676 1685 392.3
C 14 254 96644 242.08 1676 1685 392.3
C 3 233 11656 25.42 1676 1685 392.3
D 13 169 1305810 3182.96 1676 1631 409.7
D 1 52 498605 1212.91 1676 1631 409.7
D 2 249 213127 516.17 1676 1631 409.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter