ASTROSAT CZTI

Data Quality Report

Orbit 24459

Creation date: 2024-06-27T19:06:12.082598
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/AS1T03_183T01_9000003606_24459cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24459cztM0_level2_quad_clean.evt
Size (bytes)1,245,113,280225,688,320
Size1.2 GB 215.2 MB
Events in quadrant A6,076,9941,560,868
Events in quadrant B6,293,6811,581,183
Events in quadrant C11,579,6501,413,292
Events in quadrant D12,905,8051,405,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265253
B0269783
C0429373
D0474523

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126611250.987284%
B126621501.184647%
C12661182114.382750%
D1266110998.680199%

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 15556 12664 0 0 0.00% 0.00%
B 15557 12665 3 3 0.02% 0.02%
C 15556 12664 1024 1024 6.58% 8.09%
D 15556 12663 966 966 6.21% 7.63%

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 19122 55.96 1572 1541 314.2
A 4 2 16765 48.46 1572 1541 314.2
A 3 137 14011 39.69 1572 1541 314.2
B 3 64 84987 284.34 1561 1522 293.5
B 7 202 46982 154.87 1561 1522 293.5
B 12 111 35474 115.66 1561 1522 293.5
C 2 16 5706972 17431.49 1429 1436 327.3
C 14 238 229014 695.29 1429 1436 327.3
C 3 233 37017 108.71 1429 1436 327.3
D 7 238 4241373 11957.83 1477 1433 354.6
D 12 218 1713586 4828.76 1477 1433 354.6
D 1 52 859890 2421.09 1477 1433 354.6

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