ASTROSAT CZTI

Data Quality Report

Orbit 35507

Creation date: 2022-04-23T05:39:03.076257
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_097T07_9000005084_35507cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35507cztM0_level2_quad_clean.evt
Size (bytes)421,848,00066,453,120
Size402.3 MB 63.4 MB
Events in quadrant A2,925,643416,154
Events in quadrant B3,327,278430,753
Events in quadrant C3,268,093415,290
Events in quadrant D2,909,658393,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117593
B0130562
C0127972
D0118992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50771803.545401%
B50771533.013591%
C50771382.718141%
D5077941.851487%

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 7081 5078 162 162 2.29% 3.19%
B 7081 5078 96 96 1.36% 1.89%
C 7081 5078 93 93 1.31% 1.83%
D 7081 5078 84 84 1.19% 1.65%

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 410788 3305.84 617 606 124.1
A 10 83 121130 971.36 617 606 124.1
A 13 6 9200 69.26 617 606 124.1
B 5 172 444086 3755.57 621 606 118.1
B 5 200 303562 2565.55 621 606 118.1
B 4 232 73375 616.24 621 606 118.1
C 0 10 474449 3407.49 602 609 139.1
C 15 214 208882 1497.74 602 609 139.1
C 0 207 128667 920.89 602 609 139.1
D 7 80 200441 1373.51 598 582 145.5
D 10 118 134099 917.58 598 582 145.5
D 13 249 62210 423.53 598 582 145.5

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