ASTROSAT CZTI

Data Quality Report

Orbit 37503

Creation date: 2024-06-27T21:40:50.857377
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/AS1A11_030T02_9000005328_37503cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37503cztM0_level2_quad_clean.evt
Size (bytes)486,498,24070,145,280
Size464.0 MB 66.9 MB
Events in quadrant A2,961,339464,794
Events in quadrant B3,329,566447,569
Events in quadrant C3,201,540426,771
Events in quadrant D4,872,796404,530

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122366
B01330210
C0128353
D01821410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5433240.441745%
B54331963.607583%
C54341031.895473%
D54324588.431517%

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 8811 5437 11 11 0.12% 0.20%
B 8811 5436 131 131 1.49% 2.41%
C 8811 5437 78 78 0.89% 1.43%
D 8811 5436 460 460 5.22% 8.46%

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 307224 2297.42 651 639 133.4
A 6 10 37916 279.34 651 639 133.4
A 15 222 27764 203.26 651 639 133.4
B 5 172 338492 2792.44 634 618 121.0
B 15 35 163293 1344.46 634 618 121.0
B 5 255 117498 965.98 634 618 121.0
C 14 254 328846 2260.28 623 628 145.2
C 15 214 230623 1583.87 623 628 145.2
C 0 10 94078 643.55 623 628 145.2
D 13 249 1236673 8136.38 611 593 151.9
D 1 52 580182 3815.09 611 593 151.9
D 2 249 280005 1839.2 611 593 151.9

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