ASTROSAT CZTI

Data Quality Report

Orbit 44271

Creation date: 2024-06-27T23:01:12.014121
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/AS1A13_077T01_9000005984_44271cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44271cztM0_level2_quad_clean.evt
Size (bytes)213,943,68029,090,880
Size204.0 MB 27.7 MB
Events in quadrant A3,658,14877,553
Events in quadrant B1,246,093243,778
Events in quadrant C1,060,058234,354
Events in quadrant D1,806,619187,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121601
B049931
C042821
D066602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1877134971.870005%
B18771005.327651%
C1877663.516249%
D187633818.017058%

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 3122 1877 969 969 31.04% 51.62%
B 3122 1878 6 6 0.19% 0.32%
C 3122 1878 2 2 0.06% 0.11%
D 3121 1877 173 173 5.54% 9.22%

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 15 223 2473098 59842.37 189 185 41.3
A 10 83 438607 10609.43 189 185 41.3
A 4 0 6814 160.42 189 185 41.3
B 4 173 54119 1011.37 261 254 53.3
B 5 172 36913 688.31 261 254 53.3
B 5 235 26363 490.22 261 254 53.3
C 14 254 31354 495.3 259 260 62.8
C 3 233 8784 135.78 259 260 62.8
C 4 254 5118 77.38 259 260 62.8
D 1 52 322265 5144.19 245 238 62.6
D 12 1 231708 3697.6 245 238 62.6
D 13 249 122760 1957.22 245 238 62.6

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