ASTROSAT CZTI

Data Quality Report

Orbit 57949

Creation date: 2026-06-14T07:11:28.738843
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_031T01_9000006584_57949cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57949cztM0_level2_quad_clean.evt
Size (bytes)536,731,200101,128,320
Size511.9 MB 96.4 MB
Events in quadrant A3,252,141682,903
Events in quadrant B4,441,721701,113
Events in quadrant C3,879,678642,034
Events in quadrant D7,731,944531,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150952
B0184672
C0168542
D0281722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7243670.925031%
B72434596.337153%
C72431301.794836%
D7243119316.471076%

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 7608 7246 2 2 0.03% 0.03%
B 7608 7246 188 188 2.47% 2.59%
C 7608 7246 89 89 1.17% 1.23%
D 7608 7246 1042 1042 13.70% 14.38%

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 7 64 52717 262.93 798 777 197.5
A 3 14 52694 262.81 798 777 197.5
A 6 161 30024 148.05 798 777 197.5
B 5 185 968147 5774.22 775 746 167.5
B 3 238 136273 808.93 775 746 167.5
B 10 247 86075 509.31 775 746 167.5
C 15 224 603323 2876.4 768 763 209.5
C 14 254 89381 423.03 768 763 209.5
C 14 246 61299 288.98 768 763 209.5
D 12 110 4534803 22380.57 721 689 202.6
D 8 240 142025 697.64 721 689 202.6
D 12 248 67782 331.17 721 689 202.6

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