ASTROSAT CZTI

Data Quality Report

Orbit 34939

Creation date: 2022-03-15T21:51:53.830492
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_069T01_9000005008_34939cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34939cztM0_level2_quad_clean.evt
Size (bytes)639,973,44083,666,880
Size610.3 MB 79.8 MB
Events in quadrant A5,926,688540,579
Events in quadrant B3,794,719553,723
Events in quadrant C2,909,079555,813
Events in quadrant D6,382,103500,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213723
B0148462
C0118862
D0227292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547177314.129044%
B54713456.305977%
C54711091.992323%
D547173113.361360%

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 7204 5471 667 667 9.26% 12.19%
B 7204 5472 259 259 3.60% 4.73%
C 7204 5472 79 79 1.10% 1.44%
D 7204 5472 766 766 10.63% 14.00%

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 3455510 27489.39 620 608 125.7
A 10 83 66356 523.13 620 608 125.7
A 13 254 9059 67.24 620 608 125.7
B 5 172 1121889 9444.9 618 603 118.7
B 0 190 107221 898.07 618 603 118.7
B 4 232 61537 513.26 618 603 118.7
C 0 10 247306 1718.76 618 623 143.5
C 15 214 229951 1597.84 618 623 143.5
C 12 250 8415 54.29 618 623 143.5
D 1 52 2232271 15059.65 599 582 148.2
D 8 195 554169 3735.66 599 582 148.2
D 2 31 486140 3276.59 599 582 148.2

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