ASTROSAT CZTI

Data Quality Report

Orbit 59416

Creation date: 2026-09-20T23:29:46.235421
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_033T01_9000006608_59416cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59416cztM0_level2_quad_clean.evt
Size (bytes)495,374,400107,435,520
Size472.4 MB 102.5 MB
Events in quadrant A5,036,600688,463
Events in quadrant B4,526,762743,785
Events in quadrant C3,588,134686,914
Events in quadrant D4,618,004625,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201942
B0184662
C0159092
D01886410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73014456.095055%
B73025377.354150%
C73022132.917009%
D73014275.848514%

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 9221 7303 154 154 1.67% 2.11%
B 9222 7304 217 217 2.35% 2.97%
C 9222 7304 30 30 0.33% 0.41%
D 9221 7303 186 186 2.02% 2.55%

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 14 238 1328314 6569.83 830 811 202.1
A 14 254 224892 1108.98 830 811 202.1
A 7 64 120068 590.2 830 811 202.1
B 4 236 948860 5414.42 818 786 175.1
B 5 172 107541 609.67 818 786 175.1
B 6 255 75165 424.78 818 786 175.1
C 2 12 171368 767.04 824 815 222.4
C 4 5 39096 172.16 824 815 222.4
C 3 242 34317 150.67 824 815 222.4
D 2 120 420942 1864.31 811 777 225.4
D 6 239 289637 1281.7 811 777 225.4
D 2 249 227083 1004.14 811 777 225.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct