ASTROSAT CZTI

Data Quality Report

Orbit 25985

Creation date: 2024-06-27T19:22:48.972148
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_9000003756_25985cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25985cztM0_level2_quad_clean.evt
Size (bytes)120,830,40010,379,520
Size115.2 MB 9.9 MB
Events in quadrant A994,51450,197
Events in quadrant B775,99250,546
Events in quadrant C769,63747,840
Events in quadrant D1,010,51749,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038860
B032170
C032070
D039850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B091
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1465382.593857%
B1472453.057065%
C1463422.870813%
D1466443.001364%

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 2795 1496 1 1 0.04% 0.07%
B 2807 1507 0 0 0.00% 0.00%
C 2783 1491 0 0 0.00% 0.00%
D 2787 1496 12 12 0.43% 0.80%

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 0 13 229217 5332.01 198 193 43.0
A 13 254 2349 50.19 198 193 43.0
A 3 137 1872 39.09 198 193 43.0
B 0 229 6507 156.74 194 189 40.3
B 0 190 5610 134.49 194 189 40.3
B 12 111 4709 112.14 194 189 40.3
C 14 238 28882 633.57 184 184 45.3
C 0 207 13762 299.76 184 184 45.3
C 3 233 8396 181.3 184 184 45.3
D 10 230 104479 2200.89 189 185 47.4
D 12 233 92468 1947.43 189 185 47.4
D 1 52 78575 1654.25 189 185 47.4

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