ASTROSAT CZTI

Data Quality Report

Orbit 36459

Creation date: 2022-06-26T13:18:05.076601
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/AS1A11_003T08_9000005202_36459cztM0_level2.evt modeM0/AS1A11_003T08_9000005202_36459cztM0_level2_quad_clean.evt
Size (bytes)430,303,68076,890,240
Size410.4 MB 73.3 MB
Events in quadrant A2,926,128488,127
Events in quadrant B3,506,158484,887
Events in quadrant C3,093,051479,282
Events in quadrant D3,103,443461,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123163
B0141852
C0126212
D0131552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5924180.303849%
B59241732.920324%
C5924651.097232%
D5924611.029710%

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 9177 5926 0 0 0.00% 0.00%
B 9177 5926 97 97 1.06% 1.64%
C 9177 5926 32 32 0.35% 0.54%
D 9177 5926 38 38 0.41% 0.64%

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 10 83 207224 1471.97 699 686 140.3
A 13 254 9995 66.34 699 686 140.3
A 13 6 9655 63.92 699 686 140.3
B 5 172 571037 4327.85 685 668 131.8
B 5 255 106783 805.18 685 668 131.8
B 15 85 32010 237.82 685 668 131.8
C 15 214 275408 1751.65 671 675 156.8
C 0 10 186813 1186.78 671 675 156.8
C 0 207 5607 31.45 671 675 156.8
D 13 249 90132 541.76 675 658 165.2
D 10 199 84372 506.88 675 658 165.2
D 2 250 77858 467.44 675 658 165.2

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