ASTROSAT CZTI

Data Quality Report

Orbit 52306

Creation date: 2025-07-22T15:28:58.833474
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_52306cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52306cztM0_level2_quad_clean.evt
Size (bytes)779,852,16072,993,600
Size743.7 MB 69.6 MB
Events in quadrant A2,955,933571,245
Events in quadrant B5,201,179581,803
Events in quadrant C10,810,294307,337
Events in quadrant D9,432,761327,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131871
B0197191
C0363401
D0322331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6040370.612583%
B60414216.969045%
C6041297649.263367%
D6041233838.702202%

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 7080 6040 18 18 0.25% 0.30%
B 7081 6041 267 267 3.77% 4.42%
C 7080 6040 2813 2813 39.73% 46.57%
D 7080 6041 2245 2245 31.71% 37.16%

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 138805 885.72 622 605 156.0
A 5 240 75943 482.84 622 605 156.0
A 3 14 75064 477.21 622 605 156.0
B 7 0 1069208 8323.57 603 582 128.4
B 4 171 771641 6005.81 603 582 128.4
B 0 216 589025 4583.41 603 582 128.4
C 15 224 2471470 19569.44 453 450 126.3
C 9 38 1628874 12896.44 453 450 126.3
C 0 161 1545336 12234.85 453 450 126.3
D 6 42 3379295 25025.71 464 443 135.0
D 12 2 2801177 20743.84 464 443 135.0
D 7 96 552879 4091.66 464 443 135.0

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