ASTROSAT CZTI

Data Quality Report

Orbit 21194

Creation date: 2024-06-27T18:24:47.595418
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/AS1A06_002T01_9000003134_21194cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21194cztM0_level2_quad_clean.evt
Size (bytes)610,583,04097,174,080
Size582.3 MB 92.7 MB
Events in quadrant A3,680,024630,518
Events in quadrant B3,892,617639,064
Events in quadrant C3,727,532614,845
Events in quadrant D6,669,995523,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158702
B0164582
C0160572
D0249962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7680550.716146%
B7681911.184742%
C76811181.536258%
D7681104013.539904%

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 9240 7682 0 0 0.00% 0.00%
B 9241 7683 8 8 0.09% 0.10%
C 9241 7683 1 1 0.01% 0.01%
D 9241 7682 913 913 9.88% 11.88%

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 13 252 21755 109.31 940 920 190.6
A 5 16 16173 80.02 940 920 190.6
A 13 254 11613 56.1 940 920 190.6
B 0 190 45307 245.51 942 918 180.8
B 3 64 36534 196.99 942 918 180.8
B 0 230 26556 141.8 942 918 180.8
C 14 238 139653 654.27 898 902 212.1
C 3 233 80173 373.79 898 902 212.1
C 0 10 8970 38.04 898 902 212.1
D 7 238 2635074 13014.78 828 802 202.4
D 1 52 290113 1429.36 828 802 202.4
D 12 233 177215 871.58 828 802 202.4

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