ASTROSAT CZTI

Data Quality Report

Orbit 20182

Creation date: 2024-06-27T18:12:08.742237
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_20182cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20182cztM0_level2_quad_clean.evt
Size (bytes)544,049,280137,318,400
Size518.8 MB 131.0 MB
Events in quadrant A3,467,452938,395
Events in quadrant B3,697,326931,812
Events in quadrant C4,492,357892,759
Events in quadrant D4,322,581886,310

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152521
B0157301
C0182641
D0178361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73241071.460950%
B73241502.048061%
C73232082.840366%
D73242102.867286%

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 7549 7326 2 2 0.03% 0.03%
B 7549 7326 15 15 0.20% 0.20%
C 7548 7325 2 2 0.03% 0.03%
D 7549 7326 91 91 1.21% 1.24%

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 14 111 45121 250.74 877 858 176.5
A 14 238 29245 160.81 877 858 176.5
A 13 254 11170 58.42 877 858 176.5
B 0 197 139015 830.54 871 850 166.4
B 0 190 40721 239.67 871 850 166.4
B 5 172 37940 222.95 871 850 166.4
C 3 233 1073098 5478.62 839 843 195.7
C 14 238 129777 658.78 839 843 195.7
C 8 128 10147 47.54 839 843 195.7
D 15 0 249198 1194.69 858 831 207.9
D 1 52 214530 1027.93 858 831 207.9
D 7 238 140888 673.7 858 831 207.9

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