ASTROSAT CZTI

Data Quality Report

Orbit 33896

Creation date: 2024-06-27T20:53:53.069593
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/AS1T04_090T01_9000004840_33896cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33896cztM0_level2_quad_clean.evt
Size (bytes)507,055,68081,270,720
Size483.6 MB 77.5 MB
Events in quadrant A3,480,743531,039
Events in quadrant B3,344,480536,517
Events in quadrant C3,110,808520,633
Events in quadrant D5,034,066474,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142353
B0137112
C0127652
D0190242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569040.070299%
B56901803.163445%
C5690851.493849%
D56903656.414763%

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 7332 5691 0 0 0.00% 0.00%
B 7332 5691 109 109 1.49% 1.92%
C 7332 5691 68 68 0.93% 1.19%
D 7331 5690 292 292 3.98% 5.13%

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 932295 7179.49 654 642 129.8
A 13 6 12380 90.46 654 642 129.8
A 10 83 12095 88.26 654 642 129.8
B 5 172 392818 3187.22 644 626 123.1
B 4 251 180359 1460.64 644 626 123.1
B 0 156 60181 483.99 644 626 123.1
C 0 10 282031 1940.01 626 631 145.1
C 15 214 247986 1705.3 626 631 145.1
C 3 233 89476 612.51 626 631 145.1
D 12 235 851513 5637.48 613 595 150.9
D 1 52 835253 5529.76 613 595 150.9
D 8 195 594841 3936.99 613 595 150.9

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