ASTROSAT CZTI

Data Quality Report

Orbit 53853

Creation date: 2025-09-11T17:09:42.162376
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_057T04_9000006508_53853cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53853cztM0_level2_quad_clean.evt
Size (bytes)389,980,80070,297,920
Size371.9 MB 67.0 MB
Events in quadrant A2,872,778468,738
Events in quadrant B3,303,404484,643
Events in quadrant C4,136,252398,555
Events in quadrant D3,724,677413,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141492247
B0157192424
C0202514580
D0171142578

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01318
B013713
C013614
D013624

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5167581.122508%
B51712404.641269%
C49514128.321551%
D51341162.259447%

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 8097 5691 57 57 0.70% 1.00%
B 8097 5717 180 180 2.22% 3.15%
C 8097 5489 351 351 4.33% 6.39%
D 8099 5711 142 142 1.75% 2.49%

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 8 249 284512 2022.57 562 547 140.4
A 0 8 191364 1359.11 562 547 140.4
A 15 174 58579 413.34 562 547 140.4
B 0 213 610942 5053.66 551 532 120.8
B 5 185 304386 2515.65 551 532 120.8
B 0 171 55125 451.98 551 532 120.8
C 15 224 1771555 12393.08 509 504 142.9
C 15 158 72435 503.34 509 504 142.9
C 13 3 57213 396.83 509 504 142.9
D 10 172 931047 6053.14 539 517 153.7
D 14 52 189302 1228.06 539 517 153.7
D 3 12 124714 807.91 539 517 153.7

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