ASTROSAT CZTI

Data Quality Report

Orbit 18160

Creation date: 2024-06-27T17:46:00.682951
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/AS1T03_014T01_9000002704_18160cztM0_level2.evt modeM0/AS1T03_014T01_9000002704_18160cztM0_level2_quad_clean.evt
Size (bytes)1,532,197,440280,267,200
Size1.4 GB 267.3 MB
Events in quadrant A10,333,0391,753,530
Events in quadrant B10,400,1181,787,184
Events in quadrant C10,931,9681,739,435
Events in quadrant D13,267,8751,711,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04420
B04420
C04420
D04420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453864
B0453074
C0465464
D0537494

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217591330.611241%
B217592080.955926%
C217593671.686658%
D217594291.971598%

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 24554 21763 6 6 0.02% 0.03%
B 24554 21763 6 6 0.02% 0.03%
C 24554 21763 58 58 0.24% 0.27%
D 24554 21763 177 177 0.72% 0.81%

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 15 174 262536 493.59 2612 2555 526.7
A 4 2 41009 73.01 2612 2555 526.7
A 0 226 22451 37.77 2612 2555 526.7
B 7 220 73064 140.99 2610 2546 500.1
B 12 111 60006 114.89 2610 2546 500.1
B 11 111 51917 98.71 2610 2546 500.1
C 4 254 727363 1231.04 2505 2520 588.8
C 14 238 392183 661.79 2505 2520 588.8
C 3 233 24073 36.6 2505 2520 588.8
D 7 238 2357982 3831.31 2535 2468 614.8
D 10 70 305525 492.93 2535 2468 614.8
D 11 176 295081 475.94 2535 2468 614.8

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