ASTROSAT CZTI

Data Quality Report

Orbit 55508

Creation date: 2026-01-02T12:03:47.485911
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_099T01_9000006536_55508cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55508cztM0_level2_quad_clean.evt
Size (bytes)609,474,240100,918,080
Size581.2 MB 96.2 MB
Events in quadrant A4,374,158659,210
Events in quadrant B5,495,083697,529
Events in quadrant C4,518,859642,093
Events in quadrant D7,602,381544,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186115
B0216360
C0189510
D0277160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73484265.797496%
B73495717.769765%
C73492944.000544%
D7349118616.138250%

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 7348 7348 257 257 3.50% 3.50%
B 7349 7349 316 316 4.30% 4.30%
C 7349 7349 223 223 3.03% 3.03%
D 7349 7349 892 892 12.14% 12.14%

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 4 159 1037658 5473.53 770 750 189.4
A 0 31 119688 627.84 770 750 189.4
A 3 62 80468 420.81 770 750 189.4
B 5 172 2271123 13831.77 759 728 164.1
B 10 247 105237 636.69 759 728 164.1
B 0 171 28694 170.38 759 728 164.1
C 9 38 1026324 4896.52 764 758 209.4
C 13 3 181366 862.31 764 758 209.4
C 1 16 111955 530.91 764 758 209.4
D 11 129 3155320 15408.18 722 691 204.7
D 7 70 268520 1308.16 722 691 204.7
D 10 181 255149 1242.85 722 691 204.7

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