ASTROSAT CZTI

Data Quality Report

Orbit 34990

Creation date: 2022-03-19T20:23:23.304470
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_123T11_9000005014_34990cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34990cztM0_level2_quad_clean.evt
Size (bytes)465,442,56068,526,720
Size443.9 MB 65.4 MB
Events in quadrant A2,716,662415,578
Events in quadrant B3,344,629424,665
Events in quadrant C3,094,645423,490
Events in quadrant D4,541,950401,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119743
B0138282
C0127592
D0176442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A586850.085208%
B58681592.709611%
C5868681.158828%
D58681883.203817%

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 9664 5870 0 0 0.00% 0.00%
B 9664 5870 106 106 1.10% 1.81%
C 9664 5870 50 50 0.52% 0.85%
D 9664 5870 147 147 1.52% 2.50%

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 10 83 76035 555.58 676 663 135.7
A 13 254 9937 68.36 676 663 135.7
A 13 6 9894 68.04 676 663 135.7
B 5 172 473405 3660.04 671 655 129.2
B 5 255 91920 706.57 671 655 129.2
B 4 232 48492 370.35 671 655 129.2
C 15 214 243217 1595.36 658 665 152.0
C 0 10 205836 1349.49 658 665 152.0
C 3 233 39116 252.91 658 665 152.0
D 8 195 1436418 9095.6 644 626 157.9
D 13 249 347815 2199.41 644 626 157.9
D 10 199 45745 285.82 644 626 157.9

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