ASTROSAT CZTI

Data Quality Report

Orbit 59052

Creation date: 2026-08-28T03:18:10.402215
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_004T02_9000006600_59052cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59052cztM0_level2_quad_clean.evt
Size (bytes)832,553,28072,662,400
Size794.0 MB 69.3 MB
Events in quadrant A4,096,117580,878
Events in quadrant B3,036,523649,260
Events in quadrant C8,225,067513,912
Events in quadrant D14,981,32824,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164441
B0132711
C0288336
D0487181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61833525.693029%
B6184971.568564%
C618398215.882258%
D6183594796.183083%

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 7233 6184 228 228 3.15% 3.69%
B 7234 6185 17 17 0.24% 0.27%
C 7233 6184 880 880 12.17% 14.23%
D 7232 6182 5213 5213 72.08% 84.33%

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 15 233 972359 5921.12 678 663 164.1
A 14 238 258584 1571.67 678 663 164.1
A 3 14 96302 582.79 678 663 164.1
B 4 236 109286 737.81 687 660 147.2
B 5 236 91133 614.51 687 660 147.2
B 10 247 33918 225.89 687 660 147.2
C 15 219 5162981 29511.34 634 626 174.9
C 4 5 332409 1896.68 634 626 174.9
C 6 13 79755 452.35 634 626 174.9
D 12 1 13841708 337818.85 138 131 41.0
D 6 239 341275 8325.99 138 131 41.0
D 2 62 150132 3660.94 138 131 41.0

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