ASTROSAT CZTI

Data Quality Report

Orbit 54539

Creation date: 2025-10-27T21:47:15.980220
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_127T09_9000006520_54539cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54539cztM0_level2_quad_clean.evt
Size (bytes)742,726,080153,244,800
Size708.3 MB 146.1 MB
Events in quadrant A6,393,5071,006,868
Events in quadrant B6,287,5241,064,894
Events in quadrant C8,459,672915,091
Events in quadrant D5,508,394898,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260220
B0264070
C0326670
D0242071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108931781.634077%
B108923813.497980%
C108937526.903516%
D108921301.193537%

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 10893 10893 61 61 0.56% 0.56%
B 10892 10892 176 176 1.62% 1.62%
C 10893 10893 621 621 5.70% 5.70%
D 10893 10893 100 100 0.92% 0.92%

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 11 3 766749 2639.46 1176 1148 290.1
A 3 14 518935 1785.11 1176 1148 290.1
A 4 249 171543 587.45 1176 1148 290.1
B 10 14 618486 2490.43 1151 1109 247.9
B 2 249 419235 1686.68 1151 1109 247.9
B 0 213 150693 603.41 1151 1109 247.9
C 12 252 2178357 7108.37 1122 1111 306.3
C 13 3 680422 2217.84 1122 1111 306.3
C 15 157 455093 1482.18 1122 1111 306.3
D 3 224 208025 643.45 1140 1089 321.6
D 3 12 162773 502.74 1140 1089 321.6
D 6 239 104407 321.26 1140 1089 321.6

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