ASTROSAT CZTI

Data Quality Report

Orbit 29891

Creation date: 2024-06-27T20:08:48.419655
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_102T12_9000004284_29891cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29891cztM0_level2_quad_clean.evt
Size (bytes)640,517,76078,721,920
Size610.8 MB 75.1 MB
Events in quadrant A3,661,594500,612
Events in quadrant B5,297,506499,511
Events in quadrant C5,983,096475,285
Events in quadrant D4,040,345478,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150282
B0194532
C0224142
D0162732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61601081.753247%
B61601772.873377%
C61605058.198052%
D6160701.136364%

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 7535 6161 3 3 0.04% 0.05%
B 7535 6161 5 5 0.07% 0.08%
C 7535 6161 103 103 1.37% 1.67%
D 7535 6161 4 4 0.05% 0.06%

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 1 113 67291 368.6 924 911 180.1
A 8 192 31247 168.45 924 911 180.1
A 13 254 10691 54.31 924 911 180.1
B 6 159 1658586 9767.14 912 893 169.7
B 0 229 60279 349.9 912 893 169.7
B 12 111 19895 111.96 912 893 169.7
C 3 233 1949798 9636.54 876 885 202.2
C 10 22 453607 2238.52 876 885 202.2
C 14 238 148830 731.52 876 885 202.2
D 8 195 323118 1535.43 902 881 209.9
D 13 104 185594 880.14 902 881 209.9
D 13 153 39254 182.84 902 881 209.9

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