ASTROSAT CZTI

Data Quality Report

Orbit 15416

Creation date: 2024-06-27T17:08:14.098726
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_076T01_9000002274_15416cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15416cztM0_level2_quad_clean.evt
Size (bytes)581,630,40094,040,640
Size554.7 MB 89.7 MB
Events in quadrant A3,121,418634,058
Events in quadrant B3,172,662632,623
Events in quadrant C4,670,085602,247
Events in quadrant D6,241,672556,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131572
B0131871
C0180211
D0228091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60361262.087475%
B60361001.656726%
C60363776.245858%
D603677412.823062%

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 7267 6038 12 12 0.17% 0.20%
B 7267 6037 6 6 0.08% 0.10%
C 7267 6038 374 374 5.15% 6.19%
D 7267 6037 683 683 9.40% 11.31%

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 14 238 80117 525.09 757 743 151.2
A 13 248 55020 359.06 757 743 151.2
A 14 237 39605 257.09 757 743 151.2
B 10 245 52368 362.57 753 738 142.4
B 0 197 34615 237.9 753 738 142.4
B 7 220 27180 185.69 753 738 142.4
C 3 233 1813660 11100.6 711 715 163.3
C 7 247 67659 409.9 711 715 163.3
C 8 128 7559 41.91 711 715 163.3
D 13 122 2503384 14714.35 700 680 170.1
D 5 222 610935 3587.92 700 680 170.1
D 2 33 291415 1709.34 700 680 170.1

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