ASTROSAT CZTI

Data Quality Report

Orbit 09643

Creation date: 2024-06-27T15:48:49.082903
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_077T01_9000001372_09643cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09643cztM0_level2_quad_clean.evt
Size (bytes)1,733,875,200327,954,240
Size1.6 GB 312.8 MB
Events in quadrant A11,525,3612,103,683
Events in quadrant B12,113,8202,114,819
Events in quadrant C11,327,6392,109,185
Events in quadrant D15,945,6511,978,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0511
B0511
C0512
D0512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055252
B054955
C055264
D054959

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560357082
B0573067212
C0560126910
D0734699768

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A236433741.581864%
B236814171.760905%
C236953231.363157%
D233735542.370256%

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 32234 24890 2 2 0.01% 0.01%
B 32234 24894 10 10 0.03% 0.04%
C 32234 24919 7 7 0.02% 0.03%
D 32234 24566 136 136 0.42% 0.55%

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 13 248 36087 55.52 2978 2920 597.4
A 0 226 27905 41.82 2978 2920 597.4
A 14 111 26809 39.99 2978 2920 597.4
B 0 214 246930 435.81 2977 2913 559.9
B 0 229 108604 188.76 2977 2913 559.9
B 0 219 96158 166.53 2977 2913 559.9
C 14 234 50271 71.9 2891 2905 658.8
C 13 61 21709 28.54 2891 2905 658.8
C 3 202 7321 6.7 2891 2905 658.8
D 8 195 3594187 5309.36 2841 2775 676.4
D 13 104 416789 612.06 2841 2775 676.4
D 1 52 405899 595.96 2841 2775 676.4

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