ASTROSAT CZTI

Data Quality Report

Orbit 50711

Creation date: 2025-02-12T02:31:20.593801
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/AS1C09_003T01_9000006448_50711cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50711cztM0_level2_quad_clean.evt
Size (bytes)556,303,68092,597,760
Size530.5 MB 88.3 MB
Events in quadrant A3,905,316609,419
Events in quadrant B3,553,731681,247
Events in quadrant C7,452,996519,646
Events in quadrant D5,191,668552,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158582
B0150002
C0264962
D0198174

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63042283.616751%
B63041512.395305%
C6304126120.003173%
D63033876.139933%

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 7469 6305 148 148 1.98% 2.35%
B 7469 6305 72 72 0.96% 1.14%
C 7469 6304 964 964 12.91% 15.29%
D 7468 6304 294 294 3.94% 4.66%

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 4 249 262106 1563.68 674 658 167.2
A 9 191 231430 1380.21 674 658 167.2
A 8 38 185655 1106.44 674 658 167.2
B 6 51 161314 1111.59 682 658 144.5
B 7 0 133311 917.83 682 658 144.5
B 0 213 118125 812.76 682 658 144.5
C 5 10 1700924 9862.8 625 620 172.4
C 0 193 1126378 6530.08 625 620 172.4
C 15 1 1055830 6120.86 625 620 172.4
D 8 176 1045001 5747.83 655 631 181.7
D 10 98 319153 1753.03 655 631 181.7
D 2 249 236399 1297.58 655 631 181.7

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