ASTROSAT CZTI

Data Quality Report

Orbit 20220508_A09_029T06_9000005126_level2

Creation date: 2026-01-02T11:39:05.752947
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_029T06_9000005126cztM0_level2.fits modeM0/AS1A09_029T06_9000005126cztM0_level2_quad_clean.evt
Size (bytes)265,884,480266,434,560
Size253.6 MB 254.1 MB
Events in quadrant A1,629,5781,611,077
Events in quadrant B1,574,9581,647,899
Events in quadrant C1,577,7021,557,284
Events in quadrant D1,350,8501,334,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0701850
B0632560
C0629090
D0906040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2788613874.973822%
B278865111.832461%
C278864561.635229%
D2788621517.713548%

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 40527 27860 0 0 0.00% 0.00%
B 40527 27883 0 0 0.00% 0.00%
C 40527 27885 0 0 0.00% 0.00%
D 40527 27885 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 7 110 1366 9.05 425 402 106.5
A 14 95 1293 8.37 425 402 106.5
A 9 19 1279 8.23 425 402 106.5
B 2 9 1361 11.68 417 399 82.4
B 3 80 1166 9.31 417 399 82.4
B 2 8 1106 8.58 417 399 82.4
C 3 203 1283 8.21 417 392 108.5
C 3 202 1268 8.08 417 392 108.5
C 1 80 1226 7.69 417 392 108.5
D 6 67 1018 6.44 386 353 103.3
D 6 62 993 6.2 386 353 103.3
D 7 3 986 6.13 386 353 103.3

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