ASTROSAT CZTI

Data Quality Report

Orbit 54722

Creation date: 2025-11-12T14:04:47.680733
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_103T01_9000006524_54722cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54722cztM0_level2_quad_clean.evt
Size (bytes)459,158,40095,679,360
Size437.9 MB 91.2 MB
Events in quadrant A2,929,406639,509
Events in quadrant B5,218,208641,289
Events in quadrant C4,280,373581,601
Events in quadrant D4,043,997564,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139271
B0202231
C0178911
D0167111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745250.370645%
B67465688.419804%
C67463665.425437%
D67461251.852950%

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 7610 6746 0 0 0.00% 0.00%
B 7611 6747 449 449 5.90% 6.65%
C 7611 6747 404 404 5.31% 5.99%
D 7611 6747 87 87 1.14% 1.29%

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 4 206 53941 307.51 700 684 173.2
A 4 3 44224 251.4 700 684 173.2
A 4 249 28755 162.08 700 684 173.2
B 0 173 815851 5622.29 676 652 145.0
B 5 185 767490 5288.76 676 652 145.0
B 2 249 442928 3050.31 676 652 145.0
C 9 38 1124909 6049.26 671 662 185.8
C 6 223 191870 1028.84 671 662 185.8
C 12 252 109299 584.55 671 662 185.8
D 2 62 271217 1385.27 672 641 195.3
D 3 12 190548 972.27 672 641 195.3
D 11 129 185558 946.72 672 641 195.3

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