ASTROSAT CZTI

Data Quality Report

Orbit 53140

Creation date: 2025-07-25T16:43:44.371229
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_011T07_9000006488_53140cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53140cztM0_level2_quad_clean.evt
Size (bytes)960,822,72075,669,120
Size916.3 MB 72.2 MB
Events in quadrant A17,726,5632,265
Events in quadrant B5,837,623633,309
Events in quadrant C6,951,996575,066
Events in quadrant D4,505,809590,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0573670
B0223451
C0256050
D0183960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7030701499.772404%
B703087412.432432%
C703083811.920341%
D70301542.190612%

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 7030 7029 6146 6146 87.43% 87.44%
B 7030 7030 608 608 8.65% 8.65%
C 7030 7029 664 664 9.45% 9.45%
D 7030 7030 103 103 1.47% 1.47%

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 9 191 16520818 298420.41 217 211 55.4
A 0 8 165028 2977.18 217 211 55.4
A 7 206 67956 1223.71 217 211 55.4
B 2 249 1802828 12286.86 681 659 146.7
B 10 247 406924 2769.84 681 659 146.7
B 1 255 264666 1799.95 681 659 146.7
C 15 224 2814478 15222.79 673 665 184.8
C 9 38 773479 4180.94 673 665 184.8
C 0 240 207128 1116.97 673 665 184.8
D 12 3 756603 3736.43 702 668 202.3
D 3 12 199089 980.75 702 668 202.3
D 10 172 110671 543.72 702 668 202.3

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