ASTROSAT CZTI

Data Quality Report

Orbit 46907

Creation date: 2024-06-27T23:29:16.232896
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/AS1A13_053T01_9000006282_46907cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46907cztM0_level2_quad_clean.evt
Size (bytes)169,626,24027,550,080
Size161.8 MB 26.3 MB
Events in quadrant A1,719,853184,847
Events in quadrant B1,990,606174,911
Events in quadrant C810,982192,597
Events in quadrant D1,629,428162,426

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061241
B070771
C034941
D059521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16251066.523077%
B162530418.707692%
C1625150.923077%
D162419211.822660%

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 1625 1625 14 14 0.86% 0.86%
B 1625 1625 210 210 12.92% 12.92%
C 1625 1625 9 9 0.55% 0.55%
D 1624 1624 162 162 9.98% 9.98%

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 10 83 939389 22406.64 195 191 41.9
A 7 3 24525 580.54 195 191 41.9
A 3 137 2031 43.9 195 191 41.9
B 3 112 1232815 32503.11 184 178 37.9
B 15 36 15665 408.37 184 178 37.9
B 0 245 6573 168.63 184 178 37.9
C 14 254 38775 814.55 194 194 47.4
C 0 207 13965 290.74 194 194 47.4
C 14 67 1282 22.97 194 194 47.4
D 12 0 378038 7700.83 189 183 49.1
D 10 181 281718 5737.79 189 183 49.1
D 13 249 193449 3938.84 189 183 49.1

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