ASTROSAT CZTI

Data Quality Report

Orbit 37581

Creation date: 2024-06-27T21:41:48.869816
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/AS1T05_053T01_9000005338_37581cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37581cztM0_level2_quad_clean.evt
Size (bytes)371,465,28050,008,320
Size354.3 MB 47.7 MB
Events in quadrant A2,688,637292,184
Events in quadrant B2,518,809298,443
Events in quadrant C2,494,679297,569
Events in quadrant D3,209,238276,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110543
B0106222
C0103552
D0130702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971180.362100%
B4971200.402334%
C4971210.422450%
D49712104.224502%

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 6974 4972 18 18 0.26% 0.36%
B 6974 4972 10 10 0.14% 0.20%
C 6974 4972 19 19 0.27% 0.38%
D 6974 4972 208 208 2.98% 4.18%

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 290090 2537.02 565 552 114.1
A 15 222 116337 1014.55 565 552 114.1
A 9 143 33680 290.28 565 552 114.1
B 5 172 47260 434.47 567 553 107.5
B 0 189 39756 364.67 567 553 107.5
B 0 213 35191 322.2 567 553 107.5
C 15 214 216998 1671.26 553 556 129.5
C 0 10 113884 875.07 553 556 129.5
C 14 254 4765 32.5 553 556 129.5
D 2 249 454679 3438.9 539 523 132.1
D 1 47 306073 2313.64 539 523 132.1
D 2 250 82154 618.11 539 523 132.1

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