ASTROSAT CZTI

Data Quality Report

Orbit 30271

Creation date: 2024-06-27T20:12:57.796032
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_007T01_9000004350_30271cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30271cztM0_level2_quad_clean.evt
Size (bytes)596,053,44098,354,880
Size568.4 MB 93.8 MB
Events in quadrant A4,094,348613,507
Events in quadrant B5,676,273626,875
Events in quadrant C3,971,230616,137
Events in quadrant D3,808,398606,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167491
B0224123
C0162521
D0157241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74072943.969218%
B74062573.470159%
C74062693.632190%
D74071862.511138%

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 7627 7410 77 77 1.01% 1.04%
B 7626 7407 1 1 0.01% 0.01%
C 7626 7408 2 2 0.03% 0.03%
D 7627 7409 24 24 0.31% 0.32%

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 14 239 580966 3136.15 907 887 185.0
A 13 254 13394 67.62 907 887 185.0
A 8 192 9717 47.74 907 887 185.0
B 6 159 2056632 11651.51 898 873 176.4
B 0 190 41771 231.8 898 873 176.4
B 0 229 38905 215.56 898 873 176.4
C 3 233 369205 1758.26 881 884 209.5
C 14 238 144369 684.95 881 884 209.5
C 2 114 16761 75.79 881 884 209.5
D 8 195 260767 1111.47 890 872 233.8
D 2 250 123552 524.66 890 872 233.8
D 2 234 27910 115.63 890 872 233.8

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