ASTROSAT CZTI

Data Quality Report

Orbit 00657

Creation date: 2024-06-27T14:01:10.408477
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/AS1P01_124T01_9000000094_00657cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00657cztM0_level2_quad_clean.evt
Size (bytes)843,249,60069,819,840
Size804.2 MB 66.6 MB
Events in quadrant A6,158,422446,869
Events in quadrant B5,952,088450,247
Events in quadrant C5,469,735444,422
Events in quadrant D7,615,819412,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219412
B0213702
C0198962
D0263432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514440.077760%
B514450.097201%
C514420.038880%
D51443817.406687%

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 7300 5145 123 123 1.68% 2.39%
B 7300 5145 76 76 1.04% 1.48%
C 7300 5145 39 39 0.53% 0.76%
D 7300 5145 768 768 10.52% 14.93%

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 0 69 42207 118.13 1548 1534 344.3
A 0 238 36629 101.93 1548 1534 344.3
A 13 147 31527 87.11 1548 1534 344.3
B 5 191 28715 75.69 1511 1524 359.2
B 3 6 23594 61.44 1511 1524 359.2
B 7 221 23322 60.68 1511 1524 359.2
C 9 83 20272 48.79 1380 1431 386.2
C 15 241 9727 21.48 1380 1431 386.2
C 9 52 9317 20.42 1380 1431 386.2
D 1 4 1323502 3127.97 1343 1394 422.7
D 13 25 494516 1166.68 1343 1394 422.7
D 13 216 181374 425.81 1343 1394 422.7

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