ASTROSAT CZTI

Data Quality Report

Orbit 08366

Creation date: 2024-06-27T15:31:41.974692
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/AS1A03_036T01_9000001164_08366cztM0_level2.evt modeM0/AS1A03_036T01_9000001164_08366cztM0_level2_quad_clean.evt
Size (bytes)471,522,24086,149,440
Size449.7 MB 82.2 MB
Events in quadrant A3,302,990549,422
Events in quadrant B3,401,603564,678
Events in quadrant C3,061,933537,602
Events in quadrant D4,087,088518,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136803
B0138622
C0130412
D0161532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62851221.941130%
B62851211.925219%
C6285641.018298%
D62852213.516309%

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 7580 6286 8 8 0.11% 0.13%
B 7580 6286 5 5 0.07% 0.08%
C 7580 6286 1 1 0.01% 0.02%
D 7580 6286 118 118 1.56% 1.88%

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 15 239 99661 605.29 818 803 163.3
A 14 111 35289 211.15 818 803 163.3
A 15 236 14028 80.97 818 803 163.3
B 4 173 78148 504.54 821 803 153.3
B 0 214 47838 306.82 821 803 153.3
B 4 80 34683 221.01 821 803 153.3
C 1 16 12057 63.31 780 784 178.1
C 13 61 5956 29.05 780 784 178.1
C 12 4 3312 14.2 780 784 178.1
D 12 233 698575 3433.85 771 756 203.2
D 2 152 264124 1295.99 771 756 203.2
D 7 71 87286 425.8 771 756 203.2

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