ASTROSAT CZTI

Data Quality Report

Orbit 35789

Creation date: 2022-05-12T12:45:58.370870
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/AS1A09_029T09_9000005138_35789cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35789cztM0_level2_quad_clean.evt
Size (bytes)543,888,00067,838,400
Size518.7 MB 64.7 MB
Events in quadrant A4,741,449383,072
Events in quadrant B4,087,897416,481
Events in quadrant C3,240,441418,088
Events in quadrant D3,974,409396,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182543
B0161602
C0134262
D0159682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63054917.787470%
B63052614.139572%
C6305791.252974%
D63051131.792228%

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 8961 6306 451 451 5.03% 7.15%
B 8961 6307 179 179 2.00% 2.84%
C 8961 6307 73 73 0.81% 1.16%
D 8961 6307 90 90 1.00% 1.43%

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 15 169 1928152 13920.98 682 667 138.5
A 10 83 164435 1182.79 682 667 138.5
A 13 6 12442 85.04 682 667 138.5
B 5 172 600219 4459.11 701 683 134.5
B 4 171 232955 1727.55 701 683 134.5
B 0 213 114170 844.07 701 683 134.5
C 15 214 266373 1663.79 689 693 159.7
C 0 10 262575 1640.01 689 693 159.7
C 10 49 14619 87.21 689 693 159.7
D 8 195 489475 2946.66 686 666 165.9
D 13 249 289681 1742.25 686 666 165.9
D 14 52 166088 997.2 686 666 165.9

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