ASTROSAT CZTI

Data Quality Report

Orbit 54545

Creation date: 2025-10-28T07:02:47.094994
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_127T09_9000006520_54545cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54545cztM0_level2_quad_clean.evt
Size (bytes)399,726,72098,763,840
Size381.2 MB 94.2 MB
Events in quadrant A3,129,773657,883
Events in quadrant B3,182,410702,971
Events in quadrant C4,716,102597,662
Events in quadrant D3,266,318582,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138972
B0140462
C0185762
D0144362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451671.038599%
B6451781.209115%
C64513976.154085%
D64511131.751666%

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 7616 6452 28 28 0.37% 0.43%
B 7616 6451 10 10 0.13% 0.16%
C 7616 6452 327 327 4.29% 5.07%
D 7616 6452 75 75 0.98% 1.16%

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 11 3 155044 851.12 729 713 181.3
A 4 249 45830 248.81 729 713 181.3
A 3 14 28475 153.1 729 713 181.3
B 8 234 91363 581.37 723 697 156.0
B 0 213 63714 404.08 723 697 156.0
B 5 185 47628 300.93 723 697 156.0
C 4 5 655994 3419.27 695 689 191.7
C 12 254 470540 2451.6 695 689 191.7
C 13 3 348115 1812.81 695 689 191.7
D 6 239 282709 1419.29 700 670 198.7
D 1 3 77394 386.09 700 670 198.7
D 3 12 50145 248.97 700 670 198.7

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