ASTROSAT CZTI

Data Quality Report

Orbit 00680

Creation date: 2024-06-27T14:01:27.771310
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/AS1P01_141T01_9000000096_00680cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00680cztM0_level2_quad_clean.evt
Size (bytes)978,128,64075,548,160
Size932.8 MB 72.0 MB
Events in quadrant A7,461,195469,235
Events in quadrant B7,684,122475,730
Events in quadrant C7,523,069460,454
Events in quadrant D6,537,627444,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02412
B02412
C02412
D02412

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05329826653
B05457627292
C05374626873
D04782923918

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248124
B0248124
C0248124
D0248124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277140.223036%
B6277100.159312%
C62782513.998089%
D6278260.414145%

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 7478 6279 255 255 3.41% 4.06%
B 7478 6279 258 258 3.45% 4.11%
C 7478 6279 469 469 6.27% 7.47%
D 7479 6280 155 155 2.07% 2.47%

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 15 17 19159 40.97 1942 1922 420.8
A 3 111 5639 8.83 1942 1922 420.8
A 14 203 4990 7.29 1942 1922 420.8
B 7 221 155109 338.53 1944 1954 452.4
B 0 220 86372 186.6 1944 1954 452.4
B 14 53 55255 117.82 1944 1954 452.4
C 9 52 830225 1751.87 1707 1774 472.9
C 15 241 17767 33.82 1707 1774 472.9
C -1 -1 -1 -1.0 1707 1774 472.9
D 1 4 191782 369.88 1684 1745 513.8
D 12 22 47601 89.25 1684 1745 513.8
D 13 252 12896 21.7 1684 1745 513.8

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