ASTROSAT CZTI

Data Quality Report

Orbit 21645

Creation date: 2024-06-27T18:30:36.480628
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/AS1A06_002T02_9000003206_21645cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21645cztM0_level2_quad_clean.evt
Size (bytes)869,359,680169,453,440
Size829.1 MB 161.6 MB
Events in quadrant A5,819,3471,091,518
Events in quadrant B6,363,0961,111,326
Events in quadrant C6,211,0001,047,979
Events in quadrant D7,087,3491,016,511

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256781
B0266011
C0265501
D0296251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125053332.662935%
B125063923.134495%
C125064483.582281%
D125064643.710219%

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 12835 12507 0 0 0.00% 0.00%
B 12836 12508 23 23 0.18% 0.18%
C 12836 12508 59 59 0.46% 0.47%
D 12836 12508 137 137 1.07% 1.10%

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 17722 53.39 1508 1472 304.4
A 0 226 13059 38.07 1508 1472 304.4
A 3 137 13033 37.99 1508 1472 304.4
B 0 229 111954 385.69 1503 1460 286.5
B 3 64 104497 359.66 1503 1460 286.5
B 0 189 70060 239.45 1503 1460 286.5
C 3 233 258849 759.9 1447 1456 338.7
C 14 238 226684 664.94 1447 1456 338.7
C 10 23 51069 146.47 1447 1456 338.7
D 7 238 717938 2034.2 1458 1414 352.2
D 13 153 193631 545.7 1458 1414 352.2
D 1 52 190506 536.83 1458 1414 352.2

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