ASTROSAT CZTI

Data Quality Report

Orbit 11172

Creation date: 2024-06-27T16:09:20.157287
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/AS1A04_049T01_9000001632_11172cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11172cztM0_level2_quad_clean.evt
Size (bytes)168,433,92033,183,360
Size160.6 MB 31.6 MB
Events in quadrant A1,856,494208,539
Events in quadrant B1,319,780225,431
Events in quadrant C826,013235,690
Events in quadrant D987,772216,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065922
B0504210
C034211
D039881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159531519.749216%
B15931459.102323%
C159560.376176%
D1595120.752351%

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 2850 1596 152 152 5.33% 9.52%
B 2850 1596 76 76 2.67% 4.76%
C 2850 1596 2 2 0.07% 0.13%
D 2850 1596 4 4 0.14% 0.25%

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 8 5 505580 12428.5 195 190 40.7
A 8 15 475108 11679.13 195 190 40.7
A 14 238 116228 2853.59 195 190 40.7
B 10 16 221171 5510.93 205 200 40.1
B 4 239 135993 3386.62 205 200 40.1
B 15 204 46038 1143.18 205 200 40.1
C 14 234 8414 164.32 209 209 49.9
C 13 61 1594 27.74 209 209 49.9
C 14 67 1186 19.57 209 209 49.9
D 10 157 91470 1757.74 205 198 51.9
D 1 52 53098 1018.76 205 198 51.9
D 8 195 11061 209.2 205 198 51.9

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