ASTROSAT CZTI

Data Quality Report

Orbit 58579

Creation date: 2026-07-26T17:32:53.690067
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_044T04_9000006592_58579cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58579cztM0_level2_quad_clean.evt
Size (bytes)1,446,733,440271,860,480
Size1.3 GB 259.3 MB
Events in quadrant A12,488,1541,774,587
Events in quadrant B13,951,7601,813,108
Events in quadrant C11,192,9081,760,917
Events in quadrant D14,379,5241,510,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507572
B0549144
C0471752
D0562342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1991110985.514540%
B19910205910.341537%
C199106543.284782%
D1991016488.277248%

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 20861 19911 436 436 2.09% 2.19%
B 20860 19910 1022 1022 4.90% 5.13%
C 20860 19910 246 246 1.18% 1.24%
D 20860 19910 1267 1267 6.07% 6.36%

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 12 114 2222801 4031.47 2232 2167 550.8
A 15 233 672528 1217.01 2232 2167 550.8
A 10 17 319082 575.34 2232 2167 550.8
B 6 255 2878845 6407.59 2102 2020 449.0
B 0 171 809849 1799.29 2102 2020 449.0
B 2 249 711029 1579.18 2102 2020 449.0
C 13 3 932367 1574.72 2178 2158 590.7
C 12 252 628128 1059.69 2178 2158 590.7
C 4 5 393726 662.87 2178 2158 590.7
D 12 128 2789301 4700.65 2130 2038 593.0
D 8 240 713158 1199.29 2130 2038 593.0
D 2 31 474409 796.64 2130 2038 593.0

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