ASTROSAT CZTI

Data Quality Report

Orbit 05226

Creation date: 2024-06-27T14:53:04.121551
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/AS1G05_258T01_9000000666_05226cztM0_level2.evt modeM0/AS1G05_258T01_9000000666_05226cztM0_level2_quad_clean.evt
Size (bytes)465,906,24091,123,200
Size444.3 MB 86.9 MB
Events in quadrant A2,616,662610,198
Events in quadrant B2,727,529624,605
Events in quadrant C2,434,895606,259
Events in quadrant D5,942,977519,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119382
B0120651
C0115791
D0216751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5707490.858595%
B5707520.911162%
C570790.157701%
D5707106018.573681%

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 6892 5708 27 27 0.39% 0.47%
B 6892 5708 6 6 0.09% 0.11%
C 6892 5708 0 0 0.00% 0.00%
D 6892 5708 888 888 12.88% 15.56%

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 50 135540 1047.07 640 627 128.8
A 13 251 11195 82.02 640 627 128.8
A 12 194 6414 44.91 640 627 128.8
B 4 80 107237 871.73 652 636 122.3
B 10 16 32368 259.49 652 636 122.3
B 4 48 20891 165.64 652 636 122.3
C 1 16 24591 170.18 617 619 140.9
C 13 61 4993 31.05 617 619 140.9
C 12 4 3229 18.53 617 619 140.9
D 11 145 3480403 25415.69 562 544 136.9
D 2 63 117036 850.82 562 544 136.9
D 2 33 83673 607.15 562 544 136.9

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