ASTROSAT CZTI

Data Quality Report

Orbit 54921

Creation date: 2025-11-22T15:28:01.468706
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_014T01_9000006528_54921cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54921cztM0_level2_quad_clean.evt
Size (bytes)3,158,326,080557,375,040
Size2.9 GB 531.6 MB
Events in quadrant A30,766,6923,621,581
Events in quadrant B19,779,3604,011,578
Events in quadrant C28,971,6313,378,908
Events in quadrant D34,263,6393,077,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01197046
B0884856
C01152326
D01314368

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08260
B08260
C08260
D08260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4054821485.297425%
B405496291.551210%
C4054830937.627996%
D40547426110.508792%

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 44633 40555 1430 1430 3.20% 3.53%
B 44634 40556 194 194 0.43% 0.48%
C 44633 40554 2111 2111 4.73% 5.21%
D 44633 40554 3504 3504 7.85% 8.64%

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 3 14 7593517 7417.15 4177 4072 1023.2
A 3 45 3748918 3659.83 4177 4072 1023.2
A 0 8 1866197 1819.85 4177 4072 1023.2
B 5 236 1248782 1376.51 4213 4053 904.3
B 5 185 830683 914.15 4213 4053 904.3
B 5 172 649512 713.8 4213 4053 904.3
C 4 5 6608420 6069.16 3986 3947 1088.2
C 13 3 1641633 1504.95 3986 3947 1088.2
C 12 252 1356488 1242.91 3986 3947 1088.2
D 11 129 5992398 5359.15 3921 3755 1117.5
D 15 94 3287737 2938.79 3921 3755 1117.5
D 6 46 1749250 1562.02 3921 3755 1117.5

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