ASTROSAT CZTI

Data Quality Report

Orbit 52502

Creation date: 2025-06-12T18:07:22.453610
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/AS1A13_037T01_9000006476_52502cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52502cztM0_level2_quad_clean.evt
Size (bytes)782,277,12091,828,800
Size746.0 MB 87.6 MB
Events in quadrant A3,441,552676,292
Events in quadrant B10,670,755471,550
Events in quadrant C6,553,662588,138
Events in quadrant D7,729,368538,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153031
B0366020
C0245200
D0280500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7262260.358028%
B7263273937.711689%
C726376210.491532%
D726392112.680710%

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 7262 7262 11 11 0.15% 0.15%
B 7263 7263 2483 2483 34.19% 34.19%
C 7263 7263 708 708 9.75% 9.75%
D 7262 7262 917 917 12.63% 12.63%

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 11 3 114799 601.39 767 747 189.6
A 8 9 92644 484.56 767 747 189.6
A 3 46 75152 392.33 767 747 189.6
B 10 44 5037847 39573.62 594 572 127.3
B 10 254 1853558 14557.35 594 572 127.3
B 7 0 883621 6937.37 594 572 127.3
C 15 224 2448050 12687.57 708 702 192.9
C 13 3 330976 1712.21 708 702 192.9
C 1 93 317897 1644.4 708 702 192.9
D 15 93 2224428 11354.89 699 668 195.8
D 6 42 1496726 7639.12 699 668 195.8
D 7 96 612052 3121.83 699 668 195.8

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