ASTROSAT CZTI

Data Quality Report

Orbit 37288

Creation date: 2024-06-27T21:37:57.065079
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_103T07_9000005302_37288cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37288cztM0_level2_quad_clean.evt
Size (bytes)444,876,48050,117,760
Size424.3 MB 47.8 MB
Events in quadrant A2,862,400285,129
Events in quadrant B2,713,916295,608
Events in quadrant C3,422,970295,428
Events in quadrant D4,122,611278,193

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114833
B0109992
C0130672
D0155772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5174210.405876%
B5174330.637804%
C51742294.425976%
D51741963.788172%

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 7177 5175 11 11 0.15% 0.21%
B 7177 5175 19 19 0.26% 0.37%
C 7177 5175 195 195 2.72% 3.77%
D 7177 5175 263 263 3.66% 5.08%

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 261258 2049.49 639 628 127.2
A 9 143 80912 631.32 639 628 127.2
A 15 223 12931 96.75 639 628 127.2
B 5 172 98824 814.45 642 626 120.6
B 0 213 38832 316.88 642 626 120.6
B 12 111 14472 114.84 642 626 120.6
C 1 23 579355 4015.82 624 630 144.1
C 15 214 217154 1502.47 624 630 144.1
C 0 10 176430 1219.89 624 630 144.1
D 1 52 1361011 9050.48 622 604 150.3
D 13 249 155391 1029.76 622 604 150.3
D 2 249 106459 704.23 622 604 150.3

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