ASTROSAT CZTI

Data Quality Report

Orbit 54750

Creation date: 2025-11-11T02:27:06.222035
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_103T01_9000006524_54750cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54750cztM0_level2_quad_clean.evt
Size (bytes)551,664,00093,386,880
Size526.1 MB 89.1 MB
Events in quadrant A3,433,124641,042
Events in quadrant B5,697,315608,817
Events in quadrant C5,519,731582,568
Events in quadrant D5,263,072539,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146252
B0213072
C0208272
D0201592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65381462.233099%
B653891614.010401%
C65385418.274702%
D65385638.611196%

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 7663 6538 62 62 0.81% 0.95%
B 7663 6538 846 846 11.04% 12.94%
C 7663 6538 405 405 5.29% 6.19%
D 7662 6537 546 546 7.13% 8.35%

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 3 14 285783 1612.21 721 705 176.8
A 4 249 152063 855.98 721 705 176.8
A 0 8 60281 336.92 721 705 176.8
B 2 249 2843852 20469.21 655 633 138.9
B 5 185 90677 648.25 655 633 138.9
B 0 213 54164 385.39 655 633 138.9
C 4 5 1033289 5548.54 676 670 186.1
C 13 3 525013 2817.44 676 670 186.1
C 12 252 474078 2543.75 676 670 186.1
D 11 129 947193 4919.79 673 643 192.4
D 3 12 481225 2497.87 673 643 192.4
D 2 120 478603 2484.25 673 643 192.4

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