ASTROSAT CZTI

Data Quality Report

Orbit 04070

Creation date: 2024-06-27T14:37:01.834441
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/AS1G05_222T01_9000000520_04070cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04070cztM0_level2_quad_clean.evt
Size (bytes)563,250,24082,707,840
Size537.2 MB 78.9 MB
Events in quadrant A4,237,863495,538
Events in quadrant B4,402,466497,082
Events in quadrant C3,605,338494,537
Events in quadrant D4,281,877473,474

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01789111
B0183576
C0162334
D01844812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78102693.444302%
B78122913.725038%
C7813941.203123%
D78101962.509603%

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 9439 7817 73 73 0.77% 0.93%
B 9439 7816 68 68 0.72% 0.87%
C 9439 7816 0 0 0.00% 0.00%
D 9439 7815 71 71 0.75% 0.91%

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 0 50 454794 2359.03 931 907 192.4
A 8 15 93587 481.7 931 907 192.4
A 13 251 78430 402.92 931 907 192.4
B 10 16 286876 1568.42 944 920 182.3
B 14 167 279454 1527.72 944 920 182.3
B 15 204 76970 417.12 944 920 182.3
C 13 61 7610 30.92 921 924 216.2
C 9 144 5223 19.88 921 924 216.2
C 12 4 4999 18.85 921 924 216.2
D 2 232 401694 1798.44 912 886 222.9
D 10 172 285807 1278.45 912 886 222.9
D 13 53 46249 203.55 912 886 222.9

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