ASTROSAT CZTI

Data Quality Report

Orbit 20210316_A10_094T12_9000004260_level2

Creation date: 2025-12-23T11:57:16.079784
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_094T12_9000004260cztM0_level2.fits modeM0/AS1A10_094T12_9000004260cztM0_level2_quad_clean.evt
Size (bytes)38,903,04024,278,400
Size37.1 MB 23.2 MB
Events in quadrant A244,640123,179
Events in quadrant B233,148123,258
Events in quadrant C218,230106,189
Events in quadrant D199,79899,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083280
B085230
C090620
D0165110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4001100.249938%
B4001190.474881%
C400160515.121220%
D4001972.424394%

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 5021 4001 0 0 0.00% 0.00%
B 5021 4001 0 0 0.00% 0.00%
C 5021 3979 0 0 0.00% 0.00%
D 5021 4001 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 29 211 8.49 63 60 17.8
A 7 110 203 8.04 63 60 17.8
A 14 95 185 7.03 63 60 17.8
B 2 9 199 9.68 61 59 14.5
B 2 8 186 8.78 61 59 14.5
B 14 254 157 6.78 61 59 14.5
C 1 81 170 7.13 57 54 16.3
C 3 235 160 6.52 57 54 16.3
C 3 187 159 6.46 57 54 16.3
D 15 46 171 7.05 57 52 16.9
D 7 5 150 5.81 57 52 16.9
D 6 83 150 5.81 57 52 16.9

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