ASTROSAT CZTI

Data Quality Report

Orbit 21233

Creation date: 2024-06-27T18:25:54.489293
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/AS1A05_062T02_9000003138_21233cztM0_level2.evt modeM0/AS1A05_062T02_9000003138_21233cztM0_level2_quad_clean.evt
Size (bytes)604,229,760101,154,240
Size576.2 MB 96.5 MB
Events in quadrant A3,300,497705,059
Events in quadrant B3,319,547708,767
Events in quadrant C3,169,737669,013
Events in quadrant D8,095,382553,187

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136631
B0138011
C0132381
D0284233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6116831.357096%
B6117921.504005%
C61171121.830963%
D6116162126.504251%

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 7406 6116 2 2 0.03% 0.03%
B 7407 6117 5 5 0.07% 0.08%
C 7407 6118 0 0 0.00% 0.00%
D 7406 6116 1313 1313 17.73% 21.47%

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 5 16 47678 282.06 833 821 166.1
A 8 6 17624 101.15 833 821 166.1
A 12 96 12972 73.14 833 821 166.1
B 0 190 30213 190.18 819 803 154.6
B 0 197 23364 145.89 819 803 154.6
B 0 230 19419 120.38 819 803 154.6
C 14 238 123350 680.92 777 784 180.0
C 0 10 6953 34.27 777 784 180.0
C 13 61 5482 26.1 777 784 180.0
D 13 174 1865039 10717.93 713 693 173.9
D 1 239 1158098 6653.8 713 693 173.9
D 15 0 820792 4714.66 713 693 173.9

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