ASTROSAT CZTI

Data Quality Report

Orbit 51571

Creation date: 2025-04-11T01:19:18.241270
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_037T05_9000006460_51571cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51571cztM0_level2_quad_clean.evt
Size (bytes)1,053,696,96084,648,960
Size1004.9 MB 80.7 MB
Events in quadrant A12,015,800526,122
Events in quadrant B4,326,694779,582
Events in quadrant C15,887,916104,541
Events in quadrant D6,188,462626,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409607
B0180442
C0523632
D0235922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7567257834.068984%
B75682803.699789%
C7568661387.381078%
D75685437.174947%

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 8532 7569 1892 1892 22.18% 25.00%
B 8533 7570 52 52 0.61% 0.69%
C 8533 7568 4701 4701 55.09% 62.12%
D 8533 7570 448 448 5.25% 5.92%

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 3954410 21392.57 753 735 184.8
A 7 64 1865210 10088.31 753 735 184.8
A 12 250 839388 4537.79 753 735 184.8
B 4 174 189253 1044.22 838 807 180.5
B 0 171 133006 732.54 838 807 180.5
B 6 51 117260 645.29 838 807 180.5
C 15 198 14139934 156748.54 327 324 90.2
C 13 3 155153 1716.4 327 324 90.2
C 3 242 142906 1580.63 327 324 90.2
D 8 176 2028891 9094.94 796 766 223.0
D 12 6 277331 1240.23 796 766 223.0
D 3 12 207768 928.28 796 766 223.0

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