ASTROSAT CZTI

Data Quality Report

Orbit 27777

Creation date: 2024-06-27T19:44:16.131063
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/AS1A10_009T02_9000004014_27777cztM0_level2.evt modeM0/AS1A10_009T02_9000004014_27777cztM0_level2_quad_clean.evt
Size (bytes)515,574,720113,592,960
Size491.7 MB 108.3 MB
Events in quadrant A3,406,999773,935
Events in quadrant B4,007,565788,760
Events in quadrant C3,948,813720,527
Events in quadrant D3,810,419704,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142252
B0161242
C0159012
D0157132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494901.385895%
B64941993.064367%
C64931652.541198%
D64931001.540120%

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 7784 6494 3 3 0.04% 0.05%
B 7784 6494 72 72 0.92% 1.11%
C 7783 6493 22 22 0.28% 0.34%
D 7783 6494 49 49 0.63% 0.75%

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 8 192 13156 70.96 880 866 173.2
A 13 254 10503 55.64 880 866 173.2
A 3 137 7868 40.43 880 866 173.2
B 3 64 481517 2955.31 873 857 162.6
B 5 255 58682 355.53 873 857 162.6
B 0 190 35985 215.98 873 857 162.6
C 3 233 526674 2765.5 821 826 190.1
C 14 238 135022 705.75 821 826 190.1
C 6 112 65291 339.03 821 826 190.1
D 1 52 571734 2930.34 826 804 194.8
D 14 35 64699 327.95 826 804 194.8
D 2 234 23727 117.65 826 804 194.8

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