ASTROSAT CZTI

Data Quality Report

Orbit 36695

Creation date: 2024-06-27T21:30:23.727713
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/AS1C07_001T09_9000005236_36695cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36695cztM0_level2_quad_clean.evt
Size (bytes)130,913,28033,491,520
Size124.8 MB 31.9 MB
Events in quadrant A860,465229,158
Events in quadrant B895,933231,685
Events in quadrant C1,075,126222,102
Events in quadrant D1,024,150215,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034402
B035391
C040651
D040631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157130.190961%
B1571201.273074%
C1571855.410567%
D1571593.755570%

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 3664 1572 1 1 0.03% 0.06%
B 3664 1572 12 12 0.33% 0.76%
C 3664 1572 67 67 1.83% 4.26%
D 3664 1572 55 55 1.50% 3.50%

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 86858 2124.58 198 194 40.8
A 9 143 3645 84.6 198 194 40.8
A 13 254 2435 54.94 198 194 40.8
B 15 85 55830 1459.54 195 191 38.1
B 14 254 29370 765.43 195 191 38.1
B 5 255 7859 201.15 195 191 38.1
C 0 10 257450 5815.94 187 188 44.2
C 15 214 72943 1644.78 187 188 44.2
C 14 254 11839 263.4 187 188 44.2
D 10 253 96077 2032.38 190 185 47.2
D 13 249 80752 1707.58 190 185 47.2
D 7 55 26977 567.84 190 185 47.2

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