ASTROSAT CZTI

Data Quality Report

Orbit 08867

Creation date: 2024-06-27T15:38:18.342908
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_009T01_9000001234_08867cztM0_level2.evt modeM0/AS1A03_009T01_9000001234_08867cztM0_level2_quad_clean.evt
Size (bytes)1,429,381,440258,624,000
Size1.3 GB 246.6 MB
Events in quadrant A11,542,2321,615,986
Events in quadrant B9,889,4691,652,027
Events in quadrant C9,249,2291,594,911
Events in quadrant D11,199,0111,534,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476575
B0432104
C0421476
D0469116

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208572701.294529%
B208572211.059596%
C208561390.666475%
D208563381.620637%

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 23492 20859 84 84 0.36% 0.40%
B 23492 20859 39 39 0.17% 0.19%
C 23492 20859 0 0 0.00% 0.00%
D 23492 20857 165 165 0.70% 0.79%

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 8 5 1894060 3859.23 2416 2358 490.2
A 15 174 149346 299.87 2416 2358 490.2
A 13 248 76199 150.64 2416 2358 490.2
B 10 16 152924 324.88 2436 2371 463.4
B 4 48 136746 289.97 2436 2371 463.4
B 12 111 50387 103.61 2436 2371 463.4
C 14 67 19760 31.76 2364 2374 547.4
C 13 61 17545 27.71 2364 2374 547.4
C 1 3 8790 11.72 2364 2374 547.4
D 8 195 838765 1486.99 2335 2278 562.5
D 2 14 472863 836.54 2335 2278 562.5
D 1 52 461018 815.49 2335 2278 562.5

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