ASTROSAT CZTI

Data Quality Report

Orbit 53868

Creation date: 2025-09-12T17:08:48.466120
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_53868cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53868cztM0_level2_quad_clean.evt
Size (bytes)708,065,28098,314,560
Size675.3 MB 93.8 MB
Events in quadrant A5,294,971666,387
Events in quadrant B4,633,304720,736
Events in quadrant C8,530,356561,492
Events in quadrant D7,194,757526,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206710
B0187120
C0304180
D0262860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71983755.209780%
B71981942.695193%
C7198117516.323979%
D7198118416.449014%

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 7198 7198 293 293 4.07% 4.07%
B 7198 7198 106 106 1.47% 1.47%
C 7198 7198 970 970 13.48% 13.48%
D 7198 7198 1100 1100 15.28% 15.28%

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 62 1782817 9190.05 774 756 193.9
A 8 249 156634 803.86 774 756 193.9
A 3 114 113930 583.64 774 756 193.9
B 5 185 435895 2638.93 768 742 164.9
B 7 0 382321 2314.04 768 742 164.9
B 0 213 248840 1504.56 768 742 164.9
C 15 224 2020182 10389.73 707 702 194.4
C 4 5 1124021 5779.2 707 702 194.4
C 15 209 1004116 5162.32 707 702 194.4
D 8 176 3872815 19449.78 699 667 199.1
D 10 229 137340 686.51 699 667 199.1
D 3 144 105603 527.09 699 667 199.1

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