ASTROSAT CZTI

Data Quality Report

Orbit 20220504_A09_029T03_9000005108_level2

Creation date: 2026-01-02T11:22:04.677957
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/AS1A09_029T03_9000005108cztM0_level2.fits modeM0/AS1A09_029T03_9000005108cztM0_level2_quad_clean.evt
Size (bytes)224,331,840179,375,040
Size213.9 MB 171.1 MB
Events in quadrant A1,402,8901,020,691
Events in quadrant B1,275,364975,269
Events in quadrant C1,326,746951,767
Events in quadrant D1,170,948866,058

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04840
B04840
C04840
D04820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495030
B0699470
C0530380
D0558260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23496330.140449%
B2349619388.248212%
C234974491.910882%
D234965622.391896%

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 34674 23497 0 0 0.00% 0.00%
B 34674 23465 0 0 0.00% 0.00%
C 34674 23486 0 0 0.00% 0.00%
D 34674 23488 0 0 0.00% 0.00%

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 9 19 1168 9.08 366 347 90.4
A 0 29 1159 8.98 366 347 90.4
A 7 110 1147 8.85 366 347 90.4
B 2 9 1121 11.83 337 323 67.4
B 3 80 967 9.55 337 323 67.4
B 2 8 922 8.88 337 323 67.4
C 1 81 1064 8.0 350 329 91.9
C 1 80 1063 7.99 350 329 91.9
C 3 203 1034 7.68 350 329 91.9
D 3 14 878 6.38 334 305 89.8
D 6 62 862 6.2 334 305 89.8
D 4 160 849 6.06 334 305 89.8

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