ASTROSAT CZTI

Data Quality Report

Orbit 08027

Creation date: 2024-06-27T15:27:03.458706
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/AS1A02_080T01_9000001104_08027cztM0_level2.evt modeM0/AS1A02_080T01_9000001104_08027cztM0_level2_quad_clean.evt
Size (bytes)768,628,800155,424,960
Size733.0 MB 148.2 MB
Events in quadrant A5,297,636987,458
Events in quadrant B5,906,0121,002,169
Events in quadrant C5,149,118979,048
Events in quadrant D6,141,207938,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380510
B02501015
C02359611
D02637911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115641621.400899%
B115612552.205692%
C115631321.141572%
D115632311.997751%

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 13032 11569 1 1 0.01% 0.01%
B 13032 11569 60 60 0.46% 0.52%
C 13032 11569 0 0 0.00% 0.00%
D 13032 11569 70 70 0.54% 0.61%

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 4 2 80346 290.4 1342 1309 272.2
A 15 234 14469 48.35 1342 1309 272.2
A 15 223 13371 44.32 1342 1309 272.2
B 4 239 292928 1136.54 1349 1316 256.6
B 11 51 180520 698.43 1349 1316 256.6
B 10 16 43557 164.63 1349 1316 256.6
C 13 61 10021 28.58 1316 1320 304.4
C 8 222 7271 19.55 1316 1320 304.4
C 12 4 6466 16.9 1316 1320 304.4
D 1 83 380137 1114.34 1301 1266 340.0
D 13 169 369306 1082.49 1301 1266 340.0
D 1 52 209275 611.8 1301 1266 340.0

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