ASTROSAT CZTI

Data Quality Report

Orbit 36101

Creation date: 2024-06-27T21:22:21.217396
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_069T01_9000005158_36101cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36101cztM0_level2_quad_clean.evt
Size (bytes)474,143,04057,101,760
Size452.2 MB 54.5 MB
Events in quadrant A2,644,182357,973
Events in quadrant B3,906,247357,820
Events in quadrant C3,396,322344,134
Events in quadrant D4,068,415312,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108413
B0147902
C0130032
D0154542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5079250.492223%
B50793997.855877%
C50791683.307738%
D50794438.722189%

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 7112 5080 8 8 0.11% 0.16%
B 7112 5080 297 297 4.18% 5.85%
C 7112 5080 157 157 2.21% 3.09%
D 7111 5078 376 376 5.29% 7.40%

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 166955 1336.09 618 606 124.5
A 15 223 53456 424.48 618 606 124.5
A 9 143 16030 123.88 618 606 124.5
B 5 172 796486 6929.52 603 589 114.9
B 5 236 516157 4488.82 603 589 114.9
B 5 255 79203 684.46 603 589 114.9
C 0 207 469639 3399.77 596 602 138.0
C 15 214 228265 1650.19 596 602 138.0
C 0 10 209170 1511.79 596 602 138.0
D 1 52 949417 6779.98 573 558 140.0
D 12 6 485857 3467.66 573 558 140.0
D 13 249 163936 1167.4 573 558 140.0

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