ASTROSAT CZTI

Data Quality Report

Orbit 13155

Creation date: 2024-06-27T16:36:59.393283
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/AS1A04_094T01_9000001942_13155cztM0_level2.evt modeM0/AS1A04_094T01_9000001942_13155cztM0_level2_quad_clean.evt
Size (bytes)543,804,480102,565,440
Size518.6 MB 97.8 MB
Events in quadrant A3,606,885673,737
Events in quadrant B4,878,645659,413
Events in quadrant C3,196,618700,057
Events in quadrant D4,342,918616,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151683
B0189072
C0139432
D0175122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546741.130461%
B654670910.831042%
C6546911.390162%
D65465909.013138%

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 8912 6549 2 2 0.02% 0.03%
B 8912 6549 417 417 4.68% 6.37%
C 8912 6549 8 8 0.09% 0.12%
D 8912 6549 419 419 4.70% 6.40%

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 0 23 205118 1257.25 808 793 162.5
A 12 189 175659 1075.98 808 793 162.5
A 15 239 73445 447.04 808 793 162.5
B 4 239 1722442 11819.03 777 758 145.7
B 4 80 34672 232.81 777 758 145.7
B 3 64 22820 151.45 777 758 145.7
C 15 208 47720 253.39 805 811 185.1
C 0 207 12064 60.79 805 811 185.1
C 13 61 5942 27.72 805 811 185.1
D 1 52 1380495 7738.21 743 725 178.3
D 14 34 54514 301.67 743 725 178.3
D 8 195 47856 264.33 743 725 178.3

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