ASTROSAT CZTI

Data Quality Report

Orbit 20210313_A10_048T05_9000004250_level2

Creation date: 2025-12-22T19:37:52.407250
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/AS1A10_048T05_9000004250cztM0_level2.fits modeM0/AS1A10_048T05_9000004250cztM0_level2_quad_clean.evt
Size (bytes)811,615,680615,579,840
Size774.0 MB 587.1 MB
Events in quadrant A5,160,6003,510,066
Events in quadrant B4,943,7083,539,612
Events in quadrant C5,043,3243,392,336
Events in quadrant D3,791,3842,569,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016720
B016720
C016720
D016720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01716960
B01736000
C01879830
D04697660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8210313101.595557%
B8210515521.890262%
C8210527813.387126%
D821022573131.340284%

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 98164 82106 0 0 0.00% 0.00%
B 98164 82102 0 0 0.00% 0.00%
C 98164 82088 0 0 0.00% 0.00%
D 98164 81844 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 0 29 4297 9.24 1344 1261 328.7
A 7 110 4002 8.34 1344 1261 328.7
A 15 236 3802 7.73 1344 1261 328.7
B 2 9 4000 10.54 1308 1244 261.6
B 2 8 3375 8.15 1308 1244 261.6
B 5 128 3284 7.8 1308 1244 261.6
C 1 80 3952 7.97 1332 1247 339.2
C 1 81 3917 7.87 1332 1247 339.2
C 12 241 3451 6.5 1332 1247 339.2
D 15 46 2760 6.12 1083 987 289.9
D 3 14 2726 6.0 1083 987 289.9
D 6 67 2711 5.95 1083 987 289.9

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