ASTROSAT CZTI

Data Quality Report

Orbit 20230106_A12_018T01_9000005470_level2

Creation date: 2023-01-16T17:18:17.083448
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/AS1A12_018T01_9000005470cztM0_level2.fits modeM0/AS1A12_018T01_9000005470cztM0_level2_quad_clean.evt
Size (bytes)2,778,811,2003,401,732,160
Size2.6 GB 3.2 GB
Events in quadrant A17,079,65222,089,845
Events in quadrant B16,292,06222,190,840
Events in quadrant C16,544,82021,011,326
Events in quadrant D12,554,48016,089,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011870
B011870
C011870
D011870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064460
B064460
C064460
D064460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06835370
B06917510
C07017490
D015090550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31614018120.573164%
B31613944501.407609%
C31613825920.819895%
D3161397796924.662886%

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 436336 316134 0 0 0.00% 0.00%
B 436336 316065 0 0 0.00% 0.00%
C 436336 316099 0 0 0.00% 0.00%
D 436336 315640 0 0 0.00% 0.00%

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 7 110 13849 8.62 4455 4181 1121.6
A 9 19 13781 8.56 4455 4181 1121.6
A 0 29 13740 8.52 4455 4181 1121.6
B 2 9 14042 11.95 4315 4118 830.1
B 3 80 12858 10.53 4315 4118 830.1
B 5 128 11514 8.91 4315 4118 830.1
C 1 81 13727 8.76 4377 4107 1098.2
C 1 80 13176 8.26 4377 4107 1098.2
C 3 202 13128 8.21 4377 4107 1098.2
D 4 160 9350 6.38 3586 3262 954.1
D 7 3 9341 6.37 3586 3262 954.1
D 10 189 9233 6.26 3586 3262 954.1

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