ASTROSAT CZTI

Data Quality Report

Orbit 36276

Creation date: 2022-06-14T10:35:20.985783
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_071T35_9000005184_36276cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36276cztM0_level2_quad_clean.evt
Size (bytes)449,530,56060,756,480
Size428.7 MB 57.9 MB
Events in quadrant A2,586,130384,118
Events in quadrant B3,844,021389,526
Events in quadrant C2,764,694375,131
Events in quadrant D4,086,581346,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106253
B0145262
C0109962
D0153412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4901330.673332%
B49014479.120588%
C4901781.591512%
D49013467.059784%

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 7054 4902 22 22 0.31% 0.45%
B 7054 4902 329 329 4.66% 6.71%
C 7054 4902 73 73 1.03% 1.49%
D 7054 4902 358 358 5.08% 7.30%

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 168556 1388.13 598 587 121.0
A 13 248 80290 658.68 598 587 121.0
A 13 6 17540 140.1 598 587 121.0
B 5 172 1263598 11414.11 582 566 110.7
B 5 236 176652 1591.3 582 566 110.7
B 8 128 33866 300.93 582 566 110.7
C 0 10 281882 2073.6 579 586 135.7
C 15 214 205292 1509.01 579 586 135.7
C 14 67 6949 46.91 579 586 135.7
D 12 6 864220 6244.09 561 545 138.3
D 13 171 490665 3543.41 561 545 138.3
D 7 223 177272 1277.68 561 545 138.3

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