ASTROSAT CZTI

Data Quality Report

Orbit 28500

Creation date: 2024-06-27T19:52:40.537611
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/AS1A10_123T03_9000004096_28500cztM0_level2.evt modeM0/AS1A10_123T03_9000004096_28500cztM0_level2_quad_clean.evt
Size (bytes)700,171,20067,590,720
Size667.7 MB 64.5 MB
Events in quadrant A3,572,547416,250
Events in quadrant B3,712,032423,521
Events in quadrant C3,695,804408,253
Events in quadrant D9,796,375355,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148271
B0151011
C0152171
D0335257

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6340881.388013%
B63401011.593060%
C63401622.555205%
D6339197631.172109%

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 7610 6340 0 0 0.00% 0.00%
B 7610 6340 3 3 0.04% 0.05%
C 7610 6340 1 1 0.01% 0.02%
D 7608 6338 1928 1928 25.34% 30.42%

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 12 96 14203 72.68 921 906 182.9
A 13 254 12013 60.71 921 906 182.9
A 3 137 8136 39.52 921 906 182.9
B 0 230 125554 733.84 911 891 169.9
B 5 255 20568 115.83 911 891 169.9
B 12 111 19778 111.18 911 891 169.9
C 14 238 147315 716.14 894 904 204.4
C 7 247 39248 187.55 894 904 204.4
C 3 233 20814 97.39 894 904 204.4
D 1 52 5019216 26092.72 820 803 192.3
D 8 195 1555650 8084.27 820 803 192.3
D 2 250 46764 238.97 820 803 192.3

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