ASTROSAT CZTI

Data Quality Report

Orbit 45722

Creation date: 2024-06-27T23:15:24.102410
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/AS1A13_028T01_9000006122_45722cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45722cztM0_level2_quad_clean.evt
Size (bytes)515,142,720117,809,280
Size491.3 MB 112.4 MB
Events in quadrant A6,289,735781,589
Events in quadrant B4,092,341802,570
Events in quadrant C3,254,374794,595
Events in quadrant D4,900,072710,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227712
B0164342
C0143522
D0191012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68603535.145773%
B68603465.043732%
C68601351.967930%
D68603525.131195%

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 7894 6859 3 3 0.04% 0.04%
B 7894 6859 98 98 1.24% 1.43%
C 7894 6859 8 8 0.10% 0.12%
D 7894 6859 164 164 2.08% 2.39%

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 10 83 2994394 17638.82 821 803 169.7
A 2 79 44510 257.53 821 803 169.7
A 7 3 39574 228.45 821 803 169.7
B 3 112 390881 2444.42 814 788 159.6
B 15 201 137695 857.89 814 788 159.6
B 5 172 135202 842.27 814 788 159.6
C 0 207 39997 207.49 813 816 188.8
C 12 2 20053 101.87 813 816 188.8
C 2 14 13488 67.1 813 816 188.8
D 1 52 1160192 5728.44 809 783 202.4
D 13 249 315623 1555.57 809 783 202.4
D 2 249 91132 446.4 809 783 202.4

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