ASTROSAT CZTI

Data Quality Report

Orbit 25614

Creation date: 2024-06-27T19:19:33.062423
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/AS1A09_081T01_9000003730_25614cztM0_level2.evt modeM0/AS1A09_081T01_9000003730_25614cztM0_level2_quad_clean.evt
Size (bytes)670,832,640109,180,800
Size639.8 MB 104.1 MB
Events in quadrant A4,727,437681,877
Events in quadrant B4,493,176691,636
Events in quadrant C4,349,882659,182
Events in quadrant D6,125,216638,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197560
B0190730
C0187840
D0241260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91621151.255184%
B9162900.982318%
C91621361.484392%
D91622372.586771%

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 10617 9164 30 30 0.28% 0.33%
B 10617 9164 3 3 0.03% 0.03%
C 10617 9164 0 0 0.00% 0.00%
D 10617 9164 179 179 1.69% 1.95%

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 0 13 175568 772.89 1112 1087 225.8
A 8 192 151925 668.16 1112 1087 225.8
A 6 16 72875 317.99 1112 1087 225.8
B 0 219 98871 456.31 1112 1084 214.3
B 12 111 26148 116.96 1112 1084 214.3
B 11 111 23440 104.32 1112 1084 214.3
C 14 238 170432 672.17 1071 1076 252.0
C 3 233 10322 36.7 1071 1076 252.0
C 13 61 7505 25.51 1071 1076 252.0
D 7 238 716240 2719.29 1079 1046 263.0
D 1 52 699052 2653.94 1079 1046 263.0
D 8 195 402074 1524.78 1079 1046 263.0

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