ASTROSAT CZTI

Data Quality Report

Orbit 56527

Creation date: 2026-03-10T15:54:24.725897
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_060T01_9000006556_56527cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56527cztM0_level2_quad_clean.evt
Size (bytes)723,185,280101,790,720
Size689.7 MB 97.1 MB
Events in quadrant A4,518,756716,877
Events in quadrant B8,548,834584,476
Events in quadrant C6,624,933630,695
Events in quadrant D6,475,843609,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189240
B0307192
C0251650
D0245740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77571391.791930%
B7756215627.797834%
C775795512.311461%
D77576828.792059%

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 7757 7757 65 65 0.84% 0.84%
B 7756 7756 1265 1265 16.31% 16.31%
C 7757 7757 884 884 11.40% 11.40%
D 7757 7757 659 659 8.50% 8.50%

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 7 64 549973 2637.61 841 821 208.2
A 4 159 270161 1293.65 841 821 208.2
A 3 14 112215 535.03 841 821 208.2
B 4 206 4623669 28515.84 745 717 162.1
B 0 213 596063 3672.28 745 717 162.1
B 5 172 141547 868.68 745 717 162.1
C 15 230 2838520 13311.15 782 775 213.2
C 12 252 321117 1502.64 782 775 213.2
C 6 223 104969 488.75 782 775 213.2
D 2 249 1244502 5553.29 790 756 224.0
D 8 240 761090 3394.87 790 756 224.0
D 8 129 312994 1394.13 790 756 224.0

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