ASTROSAT CZTI

Data Quality Report

Orbit 19818

Creation date: 2024-06-27T18:07:28.768241
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/AS1C04_009T06_9000002960_19818cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19818cztM0_level2_quad_clean.evt
Size (bytes)116,084,16029,442,240
Size110.7 MB 28.1 MB
Events in quadrant A748,369198,457
Events in quadrant B720,217203,755
Events in quadrant C710,486198,402
Events in quadrant D1,233,177180,894

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330748
B0315251
C0311561
D0479188

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1486100.672948%
B148290.607287%
C1477171.150982%
D14731198.078751%

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 1507 1506 5 5 0.33% 0.33%
B 1507 1506 3 3 0.20% 0.20%
C 1507 1506 1 1 0.07% 0.07%
D 1507 1502 120 120 7.96% 7.99%

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 74902 2028.09 174 170 36.8
A 14 254 1668 40.65 174 170 36.8
A 0 226 1520 36.64 174 170 36.8
B 6 36 12257 340.28 178 173 35.5
B 0 197 4684 127.03 178 173 35.5
B 12 111 3655 98.05 178 173 35.5
C 14 238 27395 649.45 173 174 41.9
C 5 112 4565 104.76 173 174 41.9
C 13 61 1215 24.84 173 174 41.9
D 7 38 362662 8856.12 163 158 40.9
D 1 52 202272 4937.73 163 158 40.9
D 10 230 17082 413.46 163 158 40.9

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