ASTROSAT CZTI

Data Quality Report

Orbit 27785

Creation date: 2024-06-27T19:44:22.986152
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/AS1A10_016T01_9000004016_27785cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27785cztM0_level2_quad_clean.evt
Size (bytes)777,479,040129,343,680
Size741.5 MB 123.4 MB
Events in quadrant A5,105,912806,736
Events in quadrant B5,959,645809,683
Events in quadrant C5,200,420780,032
Events in quadrant D6,537,514761,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223800
B0248980
C0225050
D0269670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10965910.829913%
B109662742.498632%
C109661661.513770%
D109661651.504651%

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 11489 10964 0 0 0.00% 0.00%
B 11490 10965 89 89 0.77% 0.81%
C 11490 10965 0 0 0.00% 0.00%
D 11490 10965 62 62 0.54% 0.57%

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 18957 66.02 1321 1292 267.6
A 3 137 12642 42.42 1321 1292 267.6
A 0 226 11251 37.22 1321 1292 267.6
B 3 64 592123 2376.53 1300 1269 248.6
B 10 245 195007 779.25 1300 1269 248.6
B 4 52 39932 155.51 1300 1269 248.6
C 14 238 200875 668.23 1261 1268 298.7
C 3 233 85838 283.12 1261 1268 298.7
C 13 61 8568 24.44 1261 1268 298.7
D 7 223 856060 2796.53 1270 1235 305.7
D 1 52 564088 1841.36 1270 1235 305.7
D 2 250 111283 360.02 1270 1235 305.7

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