ASTROSAT CZTI

Data Quality Report

Orbit 00175

Creation date: 2024-06-27T13:57:26.064149
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/AS1P01_134T04_9000000012_00175cztM0_level2.evt modeM0/AS1P01_134T04_9000000012_00175cztM0_level2_quad_clean.evt
Size (bytes)518,760,00030,885,120
Size494.7 MB 29.5 MB
Events in quadrant A3,523,223191,577
Events in quadrant B3,470,711196,589
Events in quadrant C3,243,173194,227
Events in quadrant D5,289,192155,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582
B0582
C0582
D0582

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012680252
B012537256
C011812224
D018174405

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2764100.361795%
B276190.325969%
C276330.108578%
D276164323.288664%

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 4411 2767 126 126 2.86% 4.55%
B 4407 2765 89 89 2.02% 3.22%
C 4412 2768 36 36 0.82% 1.30%
D 4408 2767 1043 1043 23.66% 37.69%

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 14 10 46685 236.24 880 876 193.9
A 15 184 39190 197.59 880 876 193.9
A 14 171 14427 69.88 880 876 193.9
B 5 216 69286 330.21 875 881 207.2
B 10 199 29358 137.46 875 881 207.2
B 15 64 4626 18.08 875 881 207.2
C 12 48 29654 128.09 797 827 225.0
C 0 188 25667 110.38 797 827 225.0
C 0 202 20356 86.78 797 827 225.0
D 2 121 2259621 10269.36 723 746 220.0
D 13 89 154252 697.87 723 746 220.0
D 12 14 24065 106.01 723 746 220.0

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