ASTROSAT CZTI

Data Quality Report

Orbit 27895

Creation date: 2024-06-27T19:45:42.353726
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_048T01_9000004028_27895cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27895cztM0_level2_quad_clean.evt
Size (bytes)890,282,880166,501,440
Size849.0 MB 158.8 MB
Events in quadrant A5,302,4021,130,429
Events in quadrant B5,444,7711,136,749
Events in quadrant C5,467,2721,041,738
Events in quadrant D10,025,557993,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224950
B0227710
C0231870
D0372080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106941711.599027%
B106941791.673836%
C106942111.973069%
D1069410209.538059%

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 13004 10694 1 1 0.01% 0.01%
B 13004 10694 3 3 0.02% 0.03%
C 13004 10695 7 7 0.05% 0.07%
D 13004 10695 689 689 5.30% 6.44%

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 13 254 18675 63.62 1372 1352 272.3
A 3 137 12833 42.17 1372 1352 272.3
A 0 226 11651 37.82 1372 1352 272.3
B 0 230 66751 255.24 1360 1328 256.3
B 12 111 31128 116.26 1360 1328 256.3
B 11 111 27973 103.95 1360 1328 256.3
C 14 238 210718 706.51 1284 1295 296.4
C 2 16 134411 449.08 1284 1295 296.4
C 3 233 115017 383.65 1284 1295 296.4
D 1 52 2812564 9389.43 1257 1225 299.4
D 13 104 1531815 5111.93 1257 1225 299.4
D 8 195 700168 2334.36 1257 1225 299.4

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