ASTROSAT CZTI

Data Quality Report

Orbit 53621

Creation date: 2025-08-27T02:09:02.276982
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/AS1A14_004T05_9000006502_53621cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53621cztM0_level2_quad_clean.evt
Size (bytes)1,089,792,00093,098,880
Size1.0 GB 88.8 MB
Events in quadrant A11,865,639504,652
Events in quadrant B6,147,972752,360
Events in quadrant C11,696,492488,318
Events in quadrant D10,030,134531,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405960
B0236790
C0401690
D0351486

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7786286536.796815%
B77865046.473157%
C7787277635.649159%
D7786194324.955048%

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 7786 7786 2779 2779 35.69% 35.69%
B 7786 7786 238 238 3.06% 3.06%
C 7786 7786 2685 2685 34.48% 34.48%
D 7786 7786 1970 1970 25.30% 25.30%

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 3 78 6586116 37367.08 706 689 176.2
A 8 249 635566 3602.42 706 689 176.2
A 4 95 540043 3060.41 706 689 176.2
B 15 20 913130 5244.96 813 785 173.9
B 10 28 559331 3211.01 813 785 173.9
B 7 0 539563 3097.37 813 785 173.9
C 15 224 4056667 21848.2 671 666 185.6
C 1 241 2212123 11912.31 671 666 185.6
C 13 3 614574 3306.9 671 666 185.6
D 8 176 5184602 24386.71 740 708 212.6
D 7 70 307726 1444.31 740 708 212.6
D 10 172 307560 1443.53 740 708 212.6

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