ASTROSAT CZTI

Data Quality Report

Orbit 18127

Creation date: 2024-06-27T17:45:29.752935
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/AS1A05_097T01_9000002690_18127cztM0_level2.evt modeM0/AS1A05_097T01_9000002690_18127cztM0_level2_quad_clean.evt
Size (bytes)130,510,08015,045,120
Size124.5 MB 14.3 MB
Events in quadrant A807,75584,518
Events in quadrant B827,12087,326
Events in quadrant C784,33385,143
Events in quadrant D1,422,61380,474

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033240
B033690
C032220
D053640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158960.377596%
B159040.251572%
C159090.566038%
D15901267.924528%

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 1589 1589 1 1 0.06% 0.06%
B 1590 1590 0 0 0.00% 0.00%
C 1590 1590 0 0 0.00% 0.00%
D 1590 1590 111 111 6.98% 6.98%

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 15 174 45866 1075.11 198 193 42.5
A 0 226 1767 37.05 198 193 42.5
A 3 137 1481 30.32 198 193 42.5
B 0 197 24890 614.28 198 193 40.2
B 5 172 10010 244.17 198 193 40.2
B 7 220 8152 197.96 198 193 40.2
C 14 238 29401 622.42 191 192 46.9
C 8 128 2959 58.96 191 192 46.9
C 5 218 2632 51.99 191 192 46.9
D 7 238 600957 12309.55 191 185 48.8
D 7 38 42663 870.36 191 185 48.8
D 13 168 16832 341.09 191 185 48.8

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