ASTROSAT CZTI

Data Quality Report

Orbit 11051

Creation date: 2024-06-27T16:07:34.278113
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/AS1C03_006T01_9000001608_11051cztM0_level2.evt modeM0/AS1C03_006T01_9000001608_11051cztM0_level2_quad_clean.evt
Size (bytes)1,077,946,560130,104,000
Size1.0 GB 124.1 MB
Events in quadrant A11,553,003737,098
Events in quadrant B7,326,611816,148
Events in quadrant C5,101,505821,724
Events in quadrant D7,896,953776,369

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422082
B0293001
C0233321
D0312031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11389159413.995961%
B113894263.740451%
C11389470.412679%
D113891581.387304%

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 11809 11390 1088 1088 9.21% 9.55%
B 11809 11390 224 224 1.90% 1.97%
C 11809 11390 19 19 0.16% 0.17%
D 11809 11390 127 127 1.08% 1.12%

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 14 238 5149433 19886.59 1262 1233 258.9
A 15 174 1518247 5859.96 1262 1233 258.9
A 13 210 21955 80.04 1262 1233 258.9
B 4 239 2006817 7883.63 1322 1289 254.4
B 0 214 36400 138.02 1322 1289 254.4
B 0 187 36260 137.47 1322 1289 254.4
C 9 54 65687 214.39 1289 1295 300.4
C 13 61 9584 27.6 1289 1295 300.4
C 12 4 6757 18.19 1289 1295 300.4
D 1 52 1173147 3744.03 1279 1241 313.0
D 8 195 629046 2005.72 1279 1241 313.0
D 11 129 363902 1158.64 1279 1241 313.0

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