ASTROSAT CZTI

Data Quality Report

Orbit 54068

Creation date: 2025-09-26T03:59:44.817393
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_041T01_9000006510_54068cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54068cztM0_level2_quad_clean.evt
Size (bytes)569,473,92093,450,240
Size543.1 MB 89.1 MB
Events in quadrant A3,674,539639,800
Events in quadrant B4,674,909686,932
Events in quadrant C6,469,030532,388
Events in quadrant D5,743,738504,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157781
B0184531
C0239245
D0218351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66731382.068035%
B66732243.356811%
C6672104415.647482%
D667383512.513113%

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 7628 6674 142 142 1.86% 2.13%
B 7628 6673 132 132 1.73% 1.98%
C 7627 6672 984 984 12.90% 14.75%
D 7628 6674 777 777 10.19% 11.64%

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 15 174 505387 2921.7 695 677 172.7
A 12 115 259030 1495.57 695 677 172.7
A 4 3 61090 349.72 695 677 172.7
B 15 20 1155294 7879.61 693 667 146.5
B 5 236 379858 2587.74 693 667 146.5
B 7 252 129995 882.58 693 667 146.5
C 15 233 2030207 11670.32 626 619 173.9
C 9 53 747349 4293.77 626 619 173.9
C 4 5 427653 2455.48 626 619 173.9
D 2 172 1938155 10679.8 636 607 181.4
D 8 176 409476 2253.69 636 607 181.4
D 7 70 289175 1590.59 636 607 181.4

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