ASTROSAT CZTI

Data Quality Report

Orbit 17957

Creation date: 2024-06-27T17:43:07.600905
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_019T01_9000002672_17957cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17957cztM0_level2_quad_clean.evt
Size (bytes)147,948,48014,780,160
Size141.1 MB 14.1 MB
Events in quadrant A846,96684,124
Events in quadrant B849,77386,209
Events in quadrant C970,69683,032
Events in quadrant D1,701,01674,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034131
B034111
C039381
D061401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1611553.414029%
B1611573.538175%
C1611734.531347%
D161122313.842334%

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 2476 1611 0 0 0.00% 0.00%
B 2476 1612 0 0 0.00% 0.00%
C 2476 1612 0 0 0.00% 0.00%
D 2476 1612 134 134 5.41% 8.31%

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 0 226 1909 36.51 219 214 46.4
A 3 137 1744 32.95 219 214 46.4
A 12 194 1603 29.92 219 214 46.4
B 12 111 5344 116.3 216 211 44.1
B 11 111 4818 104.38 216 211 44.1
B 14 111 4203 90.45 216 211 44.1
C 3 233 136977 2726.23 205 206 50.2
C 14 238 31501 623.8 205 206 50.2
C 13 61 1497 25.73 205 206 50.2
D 5 222 554664 10838.96 201 194 51.2
D 12 110 227131 4436.24 201 194 51.2
D 13 170 127174 2482.25 201 194 51.2

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