ASTROSAT CZTI

Data Quality Report

Orbit 25759

Creation date: 2024-06-27T19:21:10.547732
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/AS1A07_027T11_9000003752_25759cztM0_level2.evt modeM0/AS1A07_027T11_9000003752_25759cztM0_level2_quad_clean.evt
Size (bytes)727,914,240135,645,120
Size694.2 MB 129.4 MB
Events in quadrant A4,754,483870,084
Events in quadrant B4,876,045882,527
Events in quadrant C4,861,796841,595
Events in quadrant D6,869,956815,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205570
B0207240
C0208100
D0266070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10080920.912698%
B100811111.101081%
C100811511.497867%
D100813143.114770%

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 10515 10080 0 0 0.00% 0.00%
B 10516 10081 2 2 0.02% 0.02%
C 10516 10081 12 12 0.11% 0.12%
D 10516 10081 243 243 2.31% 2.41%

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 6 16 82664 333.57 1211 1183 244.3
A 13 254 16102 61.07 1211 1183 244.3
A 3 137 11247 41.2 1211 1183 244.3
B 0 219 39979 167.82 1204 1174 231.2
B 0 190 38928 163.28 1204 1174 231.2
B 12 111 28190 116.84 1204 1174 231.2
C 14 238 184857 673.38 1160 1167 272.8
C 3 233 153738 559.31 1160 1167 272.8
C 13 61 8084 25.36 1160 1167 272.8
D 1 52 721969 2581.15 1164 1137 279.3
D 8 195 581930 2079.7 1164 1137 279.3
D 7 80 562723 2010.92 1164 1137 279.3

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