ASTROSAT CZTI

Data Quality Report

Orbit 51235

Creation date: 2025-03-19T09:06:12.953562
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_9000006454_51235cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51235cztM0_level2_quad_clean.evt
Size (bytes)560,050,56097,211,520
Size534.1 MB 92.7 MB
Events in quadrant A5,025,352636,584
Events in quadrant B7,126,497609,668
Events in quadrant C4,151,980631,016
Events in quadrant D3,894,261587,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198482
B0259572
C0171562
D0168432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68761972.865038%
B6876119217.335660%
C68762423.519488%
D68761682.443281%

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 7881 6879 117 117 1.48% 1.70%
B 7881 6879 774 774 9.82% 11.25%
C 7881 6879 182 182 2.31% 2.65%
D 7881 6879 123 123 1.56% 1.79%

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 12 3 1037290 5937.3 698 682 174.6
A 9 160 305342 1744.98 698 682 174.6
A 8 26 183590 1047.63 698 682 174.6
B 5 185 2052575 14713.75 660 638 139.5
B 5 255 803167 5754.67 660 638 139.5
B 10 254 585262 4192.14 660 638 139.5
C 4 12 345987 1815.99 686 680 190.1
C 12 247 283361 1486.64 686 680 190.1
C 0 145 168870 884.52 686 680 190.1
D 3 12 188520 986.3 674 652 190.5
D 10 172 173356 906.69 674 652 190.5
D 2 207 168954 883.58 674 652 190.5

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