ASTROSAT CZTI

Data Quality Report

Orbit 23645

Creation date: 2024-06-27T18:57:08.288860
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/AS1A07_147T01_9000003490_23645cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23645cztM0_level2_quad_clean.evt
Size (bytes)936,527,040148,014,720
Size893.1 MB 141.2 MB
Events in quadrant A6,008,545915,380
Events in quadrant B7,770,967911,969
Events in quadrant C6,134,913893,793
Events in quadrant D7,585,599880,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260523
B0311403
C0261583
D0310443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127501050.823529%
B127505564.360784%
C127501651.294118%
D127502812.203922%

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 14095 12750 0 0 0.00% 0.00%
B 14095 12750 330 330 2.34% 2.59%
C 14095 12750 0 0 0.00% 0.00%
D 14095 12750 173 173 1.23% 1.36%

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 21345 62.73 1557 1523 316.0
A 3 137 14054 39.66 1557 1523 316.0
A 0 226 13379 37.52 1557 1523 316.0
B 3 64 1302008 4441.94 1524 1486 292.8
B 0 229 210990 715.56 1524 1486 292.8
B 5 172 114287 385.27 1524 1486 292.8
C 14 238 234892 664.58 1495 1505 351.2
C 7 247 30435 82.38 1495 1505 351.2
C 0 207 20392 53.78 1495 1505 351.2
D 1 52 826503 2219.74 1512 1466 371.7
D 9 85 632988 1699.09 1512 1466 371.7
D 12 233 261632 699.97 1512 1466 371.7

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