ASTROSAT CZTI

Data Quality Report

Orbit 55347

Creation date: 2025-12-21T06:16:31.262403
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_009T01_9000006534_55347cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55347cztM0_level2_quad_clean.evt
Size (bytes)446,921,28091,396,800
Size426.2 MB 87.2 MB
Events in quadrant A3,278,444598,033
Events in quadrant B3,554,730602,631
Events in quadrant C3,732,528569,648
Events in quadrant D5,431,007506,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150362
B0159292
C0163022
D0213952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7032660.938567%
B70321201.706485%
C7032751.066553%
D70325297.522753%

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 7967 7308 11 11 0.14% 0.15%
B 7967 7308 26 26 0.33% 0.36%
C 7967 7308 50 50 0.63% 0.68%
D 7967 7308 461 461 5.79% 6.31%

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 3 78 125200 686.42 732 712 181.4
A 12 115 121894 668.19 732 712 181.4
A 12 18 40756 220.8 732 712 181.4
B 0 199 299043 1902.37 728 700 156.8
B 5 185 201111 1277.91 728 700 156.8
B 10 247 69552 439.03 728 700 156.8
C 9 38 380696 1935.97 722 717 196.3
C 12 249 206692 1049.43 722 717 196.3
C 13 3 96480 487.91 722 717 196.3
D 11 129 1585803 8049.29 700 670 196.9
D 10 199 413101 2094.32 700 670 196.9
D 11 176 192658 974.91 700 670 196.9

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