ASTROSAT CZTI

Data Quality Report

Orbit 52284

Creation date: 2025-07-22T01:03:32.973248
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/AS1C09_011T05_9000006474_52284cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52284cztM0_level2_quad_clean.evt
Size (bytes)1,077,586,56077,587,200
Size1.0 GB 74.0 MB
Events in quadrant A4,274,330699,534
Events in quadrant B7,408,701703,990
Events in quadrant C15,855,9874,075
Events in quadrant D11,763,237414,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180282
B0272690
C0522810
D0401930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75721832.416799%
B757377110.180906%
C7573753999.551037%
D7573299639.561600%

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 7572 7572 124 124 1.64% 1.64%
B 7573 7573 460 460 6.07% 6.07%
C 7572 7572 4928 4928 65.08% 65.08%
D 7573 7573 2659 2659 35.11% 35.11%

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 4 249 384816 1965.34 787 767 195.4
A 7 206 254317 1297.52 787 767 195.4
A 5 240 69351 350.97 787 767 195.4
B 7 0 1695592 10439.08 765 738 162.4
B 4 81 840775 5174.02 765 738 162.4
B 0 213 380024 2336.13 765 738 162.4
C 15 178 6357293 152246.19 145 143 41.8
C 15 158 3504158 83916.99 145 143 41.8
C 0 161 2807943 67243.47 145 143 41.8
D 7 60 3084479 17893.15 599 572 172.4
D 12 18 1890218 10963.92 599 572 172.4
D 15 93 1507424 8742.91 599 572 172.4

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