ASTROSAT CZTI

Data Quality Report

Orbit 20172

Creation date: 2024-06-27T18:12:02.255653
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/AS1C04_001T01_9000002994_20172cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20172cztM0_level2_quad_clean.evt
Size (bytes)2,557,537,920511,220,160
Size2.4 GB 487.5 MB
Events in quadrant A18,557,3583,401,043
Events in quadrant B14,464,4083,572,736
Events in quadrant C15,300,7923,495,631
Events in quadrant D27,201,9513,044,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07485713
B0625586
C0645476
D01008407

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2865226169.130253%
B286535261.835759%
C286535061.765958%
D28652540118.850342%

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 34137 28655 1509 1509 4.42% 5.27%
B 34137 28660 78 78 0.23% 0.27%
C 34137 28660 0 0 0.00% 0.00%
D 34137 28658 4422 4422 12.95% 15.43%

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 14 238 5919025 9185.3 3213 3142 644.1
A 9 143 173623 264.7 3213 3142 644.1
A 11 29 44848 64.75 3213 3142 644.1
B 7 220 504809 795.58 3347 3258 630.4
B 0 197 157477 244.63 3347 3258 630.4
B 0 189 126248 195.09 3347 3258 630.4
C 3 233 2139113 2844.17 3243 3263 751.0
C 14 238 502284 664.51 3243 3263 751.0
C 13 61 22517 25.64 3243 3263 751.0
D 1 52 10485248 14711.17 2965 2883 712.5
D 12 218 2115056 2964.27 2965 2883 712.5
D 7 238 871967 1219.69 2965 2883 712.5

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