ASTROSAT CZTI

Data Quality Report

Orbit 19268

Creation date: 2024-06-27T18:00:51.788555
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_088T02_9000002850_19268cztM0_level2.evt modeM0/AS1A05_088T02_9000002850_19268cztM0_level2_quad_clean.evt
Size (bytes)107,006,40019,480,320
Size102.0 MB 18.6 MB
Events in quadrant A754,311122,106
Events in quadrant B791,958126,470
Events in quadrant C780,106122,224
Events in quadrant D821,038118,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030541
B031961
C031401
D032691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1325322.415094%
B1326675.052790%
C1326846.334842%
D1326554.147813%

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 2530 1326 0 0 0.00% 0.00%
B 2531 1327 0 0 0.00% 0.00%
C 2531 1327 0 0 0.00% 0.00%
D 2531 1327 3 3 0.12% 0.23%

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 11 29 2968 67.07 194 190 41.4
A 13 254 1870 40.56 194 190 41.4
A 0 226 1692 36.26 194 190 41.4
B 0 230 15161 380.94 195 190 39.3
B 0 229 4688 114.45 195 190 39.3
B 12 111 4663 113.82 195 190 39.3
C 14 238 29181 632.44 190 191 45.8
C 3 233 7226 153.47 190 191 45.8
C 3 247 1636 31.52 190 191 45.8
D 1 52 83834 1719.48 193 186 48.6
D 2 234 5425 107.69 193 186 48.6
D 13 138 5093 100.87 193 186 48.6

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