ASTROSAT CZTI

Data Quality Report

Orbit 39122

Creation date: 2024-06-27T22:00:42.682437
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/AS1A12_044T04_9000005434_39122cztM0_level2.fits modeM0/AS1A12_044T04_9000005434_39122cztM0_level2_quad_clean.evt
Size (bytes)1,028,177,280257,016,960
Size980.5 MB 245.1 MB
Events in quadrant A9,059,2081,712,352
Events in quadrant B8,127,7601,771,444
Events in quadrant C7,578,4151,686,546
Events in quadrant D12,067,0661,517,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03275
B03286
C03297
D03275

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037057561
B035290525
C033136677
D047140698

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0554
B0576
C0543
D0532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158653171.998109%
B158611951.229431%
C15857150.094595%
D158563001.892028%

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 30964 15874 254 254 0.82% 1.60%
B 30963 15873 108 108 0.35% 0.68%
C 30969 15875 3 3 0.01% 0.02%
D 30965 15874 279 279 0.90% 1.76%

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 1157720 3263.78 1741 1705 354.2
A 13 248 1129081 3182.92 1741 1705 354.2
A 13 6 28926 76.85 1741 1705 354.2
B 5 172 633907 1913.98 1732 1682 330.3
B 0 213 214094 643.05 1732 1682 330.3
B 0 229 154991 464.12 1732 1682 330.3
C 15 214 658077 1662.41 1697 1701 394.8
C 9 187 236951 595.82 1697 1701 394.8
C 3 233 65159 160.72 1697 1701 394.8
D 12 235 3974260 9551.58 1688 1637 415.9
D 13 171 363405 869.82 1688 1637 415.9
D 2 249 316119 756.12 1688 1637 415.9

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