ASTROSAT CZTI

Data Quality Report

Orbit 35000

Creation date: 2022-06-11T10:06:17.768405
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_010T01_9000005016_35000cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35000cztM0_level2_quad_clean.evt
Size (bytes)488,088,00064,546,560
Size465.5 MB 61.6 MB
Events in quadrant A2,749,504410,093
Events in quadrant B2,964,938414,769
Events in quadrant C3,187,545398,274
Events in quadrant D5,529,889369,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113593
B0120462
C0124752
D0199752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5166120.232288%
B5166390.754936%
C5166931.800232%
D516680715.621370%

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 7169 5167 3 3 0.04% 0.06%
B 7169 5167 18 18 0.25% 0.35%
C 7169 5167 80 80 1.12% 1.55%
D 7169 5167 717 717 10.00% 13.88%

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 78493 579.25 677 666 134.4
A 15 223 42204 309.16 677 666 134.4
A 13 254 8780 60.39 677 666 134.4
B 5 172 132600 1066.43 674 660 123.7
B 4 232 65102 520.86 674 660 123.7
B 4 81 33549 265.83 674 660 123.7
C 15 214 217114 1461.93 645 652 148.1
C 0 10 206816 1392.38 645 652 148.1
C 14 128 191056 1285.94 645 652 148.1
D 10 118 1929852 13312.27 599 584 144.9
D 8 195 775445 5346.67 599 584 144.9
D 12 6 128330 881.47 599 584 144.9

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