ASTROSAT CZTI

Data Quality Report

Orbit 35076

Creation date: 2022-03-25T03:40:34.086482
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/AS1T05_015T01_9000005026_35076cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35076cztM0_level2_quad_clean.evt
Size (bytes)444,332,16093,435,840
Size423.7 MB 89.1 MB
Events in quadrant A2,474,240624,893
Events in quadrant B3,074,630631,529
Events in quadrant C2,701,134636,361
Events in quadrant D4,861,403580,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106173
B0123532
C0109232
D0180302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084120.236035%
B50841362.675059%
C5084340.668765%
D50844909.638080%

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 7116 5085 8 8 0.11% 0.16%
B 7116 5085 89 89 1.25% 1.75%
C 7116 5085 13 13 0.18% 0.26%
D 7116 5085 414 414 5.82% 8.14%

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 78497 642.48 606 594 121.3
A 15 174 38757 314.73 606 594 121.3
A 13 6 11445 89.49 606 594 121.3
B 5 172 497360 4311.86 602 587 115.2
B 0 189 101224 873.5 602 587 115.2
B 4 232 43504 372.51 602 587 115.2
C 15 214 212849 1527.31 601 608 139.0
C 0 10 108130 773.74 601 608 139.0
C 14 67 35609 251.87 601 608 139.0
D 8 195 1528733 11042.37 566 552 138.4
D 10 118 741291 5352.45 566 552 138.4
D 13 249 144898 1043.02 566 552 138.4

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