ASTROSAT CZTI

Data Quality Report

Orbit 25961

Creation date: 2024-06-27T19:23:17.604201
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/AS1A07_068T01_9000003760_25961cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25961cztM0_level2_quad_clean.evt
Size (bytes)4,875,8401,679,040
Size4.6 MB 1.6 MB
Events in quadrant A35,5199,663
Events in quadrant B38,63810,135
Events in quadrant C36,9348,906
Events in quadrant D22,9663,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01700
C01620
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114024259851754446
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7900.000000%
B8500.000000%
C8100.000000%
D28414.285714%

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 1845 116 0 0 0.00% 0.00%
B 1871 132 0 0 0.00% 0.00%
C 1914 120 0 0 0.00% 0.00%
D 139 49 1 1 0.72% 2.04%

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 85 21.46 9 8 3.6
A 3 137 83 20.9 9 8 3.6
A 0 226 69 16.97 9 8 3.6
B 12 111 226 60.63 9 9 3.6
B 11 111 213 57.0 9 9 3.6
B 14 111 191 50.85 9 9 3.6
C 14 238 1529 423.02 8 8 3.6
C 3 233 559 153.24 8 8 3.6
C 13 61 59 14.18 8 8 3.6
D 7 80 11302 6640.85 3 2 1.7
D 13 104 129 74.64 3 2 1.7
D 2 234 94 54.07 3 2 1.7

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