ASTROSAT CZTI

Data Quality Report

Orbit 20160605_G05_248T01_9000000486_level2

Creation date: 2025-10-30T19:18:59.892468
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_248T01_9000000486cztM0_level2.fits modeM0/AS1G05_248T01_9000000486cztM0_level2_quad_clean.evt
Size (bytes)2,902,366,0803,268,437,120
Size2.7 GB 3.0 GB
Events in quadrant A17,341,19020,072,718
Events in quadrant B16,540,54619,745,466
Events in quadrant C17,276,61219,374,509
Events in quadrant D14,469,07617,545,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066140
B066140
C066140
D066140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07843610
B08165710
C06769170
D08208880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324988119913.689675%
B324988120173.697675%
C32498729110.895728%
D324988135854.180154%

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 370840 324693 0 0 0.00% 0.00%
B 370840 324849 0 0 0.00% 0.00%
C 370840 324968 0 0 0.00% 0.00%
D 370840 324687 0 0 0.00% 0.00%

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 14 188 17412 11.43 4512 4190 1157.1
A 0 29 17009 11.08 4512 4190 1157.1
A 14 204 14848 9.21 4512 4190 1157.1
B 2 9 14521 11.94 4388 4168 866.8
B 12 226 12558 9.68 4388 4168 866.8
B 14 254 11706 8.7 4388 4168 866.8
C 1 80 12410 6.79 4558 4197 1209.5
C 1 81 12009 6.46 4558 4197 1209.5
C 12 241 11948 6.41 4558 4197 1209.5
D 7 5 10570 6.2 4156 3766 1098.2
D 7 3 10418 6.06 4156 3766 1098.2
D 6 231 10380 6.02 4156 3766 1098.2

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