ASTROSAT CZTI

Data Quality Report

Orbit 21273

Creation date: 2024-06-27T18:23:46.229379
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/AS1A05_163T01_9000003118_21273cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21273cztM0_level2_quad_clean.evt
Size (bytes)113,420,16017,231,040
Size108.2 MB 16.4 MB
Events in quadrant A723,197110,426
Events in quadrant B725,905114,615
Events in quadrant C713,489101,961
Events in quadrant D1,186,223101,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03413501
B03412491
C03396516
D054931211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326
B0324
C0326
D0314

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1230433.495935%
B1232453.652597%
C1222413.355155%
D121623319.161184%

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 2469 1262 0 0 0.00% 0.00%
B 2359 1271 1 1 0.04% 0.08%
C 2456 1258 0 0 0.00% 0.00%
D 2445 1239 153 153 6.26% 12.35%

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 15 236 3019 72.56 186 183 39.1
A 12 96 2397 56.64 186 183 39.1
A 13 254 1945 45.08 186 183 39.1
B 3 64 6658 174.12 184 179 37.2
B 12 111 4316 111.18 184 179 37.2
B 11 111 3719 95.13 184 179 37.2
C 14 238 27794 664.48 173 174 41.6
C 3 233 6222 145.5 173 174 41.6
C 0 10 3114 70.73 173 174 41.6
D 13 174 503058 11849.92 165 159 42.4
D 13 104 40644 953.96 165 159 42.4
D 1 52 10953 254.34 165 159 42.4

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