ASTROSAT CZTI

Data Quality Report

Orbit 38209

Creation date: 2024-06-27T21:49:47.248960
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_145T01_9000005370_38209cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38209cztM0_level2_quad_clean.evt
Size (bytes)623,880,000175,501,440
Size595.0 MB 167.4 MB
Events in quadrant A5,397,6711,183,898
Events in quadrant B4,940,3111,211,481
Events in quadrant C5,689,4761,136,843
Events in quadrant D6,246,8061,049,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225123
B0218152
C0235292
D0254342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10562180.170422%
B10562420.397652%
C105621421.344442%
D105623343.162280%

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 13306 10564 4 4 0.03% 0.04%
B 13306 10564 13 13 0.10% 0.12%
C 13306 10564 119 119 0.89% 1.13%
D 13306 10564 248 248 1.86% 2.35%

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 10 83 636428 2649.97 1180 1154 239.7
A 12 189 63446 259.84 1180 1154 239.7
A 9 143 57632 235.59 1180 1154 239.7
B 5 172 103900 456.73 1173 1140 225.0
B 0 229 63899 278.94 1173 1140 225.0
B 15 85 58162 253.44 1173 1140 225.0
C 15 214 432941 1626.75 1142 1148 265.4
C 14 254 369888 1389.21 1142 1148 265.4
C 9 236 287106 1077.33 1142 1148 265.4
D 13 171 414251 1505.42 1138 1106 274.4
D 10 118 343402 1247.26 1138 1106 274.4
D 13 249 262556 952.67 1138 1106 274.4

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