ASTROSAT CZTI

Data Quality Report

Orbit 50797

Creation date: 2025-02-18T12:05:49.408090
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/AS1C07_001T01_9000006450_50797cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50797cztM0_level2_quad_clean.evt
Size (bytes)536,711,04092,856,960
Size511.8 MB 88.6 MB
Events in quadrant A3,908,854611,254
Events in quadrant B3,869,786662,654
Events in quadrant C6,662,308565,290
Events in quadrant D4,939,218533,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157711
B0158381
C0243251
D0190002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62882193.482824%
B62882353.737277%
C62884356.917939%
D62873926.235088%

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 7373 6288 93 93 1.26% 1.48%
B 7373 6288 103 103 1.40% 1.64%
C 7373 6288 303 303 4.11% 4.82%
D 7372 6287 301 301 4.08% 4.79%

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 8 234 136056 780.12 691 673 173.5
A 5 240 131357 753.05 691 673 173.5
A 4 3 114182 654.08 691 673 173.5
B 4 206 782276 5447.24 681 658 143.5
B 8 128 73280 506.12 681 658 143.5
B 0 229 63667 439.12 681 658 143.5
C 5 10 2588410 14216.2 661 653 182.0
C 1 44 320978 1759.75 661 653 182.0
C 13 3 243899 1336.31 661 653 182.0
D 8 48 625424 3441.37 658 636 181.6
D 2 216 428732 2357.98 658 636 181.6
D 2 249 370460 2037.02 658 636 181.6

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