ASTROSAT CZTI

Data Quality Report

Orbit 30999

Creation date: 2024-06-27T20:22:06.942885
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/AS1A10_071T48_9000004478_30999cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30999cztM0_level2_quad_clean.evt
Size (bytes)982,013,760167,253,120
Size936.5 MB 159.5 MB
Events in quadrant A5,851,7861,080,748
Events in quadrant B9,540,9331,074,308
Events in quadrant C6,412,1451,037,513
Events in quadrant D7,099,2541,017,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252663
B0376412
C0265162
D0287002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123871531.235166%
B123882552.058444%
C123882912.349047%
D123881861.501453%

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 13592 12387 0 0 0.00% 0.00%
B 13593 12388 6 6 0.04% 0.05%
C 13593 12388 24 24 0.18% 0.19%
D 13593 12388 62 62 0.46% 0.50%

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 22632 69.35 1516 1481 305.0
A 3 137 15759 46.81 1516 1481 305.0
A 0 226 12974 37.68 1516 1481 305.0
B 6 159 3402688 11791.07 1494 1454 288.5
B 0 190 107274 366.84 1494 1454 288.5
B 0 230 54265 183.08 1494 1454 288.5
C 0 10 387985 1134.61 1446 1451 340.7
C 14 238 238122 694.71 1446 1451 340.7
C 14 67 63427 181.92 1446 1451 340.7
D 8 195 743399 2151.95 1463 1424 344.8
D 1 239 326635 943.21 1463 1424 344.8
D 2 250 297441 858.54 1463 1424 344.8

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