ASTROSAT CZTI

Data Quality Report

Orbit 53165

Creation date: 2025-07-28T12:09:52.319397
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/AS1C09_011T06_9000006490_53165cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53165cztM0_level2_quad_clean.evt
Size (bytes)1,264,547,520157,530,240
Size1.2 GB 150.2 MB
Events in quadrant A7,065,3221,116,067
Events in quadrant B12,102,1121,075,419
Events in quadrant C15,482,247831,366
Events in quadrant D11,258,268938,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295193
B0441714
C0542303
D0417363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116864003.422899%
B11685185415.866496%
C11685313726.846384%
D11685136311.664527%

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 14066 11688 288 288 2.05% 2.46%
B 14065 11687 1309 1309 9.31% 11.20%
C 14065 11687 3117 3117 22.16% 26.67%
D 14065 11687 1181 1181 8.40% 10.11%

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 3 62 729122 2444.38 1195 1169 297.8
A 8 249 586589 1965.77 1195 1169 297.8
A 15 174 342283 1145.42 1195 1169 297.8
B 10 191 4099541 17123.44 1143 1106 239.3
B 1 239 1720164 7182.3 1143 1106 239.3
B 4 81 715639 2985.35 1143 1106 239.3
C 0 240 4789877 15977.14 1078 1067 299.7
C 1 241 2106201 7023.46 1078 1067 299.7
C 10 22 1737208 5792.37 1078 1067 299.7
D 10 172 1904581 5910.96 1114 1061 322.0
D 5 70 1705326 5292.21 1114 1061 322.0
D 9 19 1338801 4154.05 1114 1061 322.0

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