ASTROSAT CZTI

Data Quality Report

Orbit 14877

Creation date: 2024-06-27T17:00:48.098721
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/AS1T02_054T01_9000002200_14877cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14877cztM0_level2_quad_clean.evt
Size (bytes)95,690,88030,286,080
Size91.3 MB 28.9 MB
Events in quadrant A703,071207,228
Events in quadrant B696,709208,424
Events in quadrant C728,743205,522
Events in quadrant D680,190200,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028482
B028511
C029571
D027911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127340.314218%
B127330.235664%
C127360.471328%
D127350.392773%

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 1274 1274 0 0 0.00% 0.00%
B 1274 1274 0 0 0.00% 0.00%
C 1274 1274 0 0 0.00% 0.00%
D 1274 1274 0 0 0.00% 0.00%

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 12 189 11705 305.06 179 176 37.8
A 9 143 1649 38.98 179 176 37.8
A 0 226 1536 35.99 179 176 37.8
B 0 189 4167 115.69 177 172 34.5
B 12 111 3713 102.54 177 172 34.5
B 11 111 3085 84.36 177 172 34.5
C 3 233 26052 618.44 179 180 41.8
C 0 207 3136 70.66 179 180 41.8
C 13 61 1254 25.67 179 180 41.8
D 2 234 3953 83.7 178 173 45.2
D 13 104 3467 72.94 178 173 45.2
D 3 238 2816 58.52 178 173 45.2

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