ASTROSAT CZTI

Data Quality Report

Orbit 50702

Creation date: 2025-02-11T12:15:11.330804
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/AS1T05_241T01_9000006446_50702cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50702cztM0_level2_quad_clean.evt
Size (bytes)759,769,920106,375,680
Size724.6 MB 101.4 MB
Events in quadrant A5,851,149705,639
Events in quadrant B4,188,389795,337
Events in quadrant C10,215,531556,905
Events in quadrant D7,254,499610,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225710
B0181920
C0358862
D0270790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79404315.428212%
B79411321.662259%
C7940205625.894207%
D794092611.662469%

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 7940 7940 276 276 3.48% 3.48%
B 7941 7941 85 85 1.07% 1.07%
C 7940 7940 1510 1510 19.02% 19.02%
D 7940 7940 888 888 11.18% 11.18%

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 12 80 1186479 5822.08 825 806 203.7
A 4 3 249709 1222.2 825 806 203.7
A 5 240 178091 870.53 825 806 203.7
B 0 229 153657 865.69 833 806 176.6
B 10 14 142043 799.92 833 806 176.6
B 5 185 111226 625.38 833 806 176.6
C 5 10 1393214 7025.94 720 717 198.2
C 13 236 892088 4497.47 720 717 198.2
C 15 212 598257 3014.93 720 717 198.2
D 1 47 1363333 6375.78 772 745 213.7
D 7 60 404777 1890.53 772 745 213.7
D 2 249 403202 1883.16 772 745 213.7

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