ASTROSAT CZTI

Data Quality Report

Orbit 13976

Creation date: 2024-06-27T16:48:37.333448
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_225T01_9000002062_13976cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13976cztM0_level2_quad_clean.evt
Size (bytes)135,239,04038,779,200
Size129.0 MB 37.0 MB
Events in quadrant A938,585257,277
Events in quadrant B1,011,859265,585
Events in quadrant C987,438257,593
Events in quadrant D1,015,404244,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042881
B044231
C043051
D044851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2052160.779727%
B2052542.631579%
C2052251.218324%
D2052251.218324%

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 2428 2054 0 0 0.00% 0.00%
B 2428 2054 8 8 0.33% 0.39%
C 2428 2054 0 0 0.00% 0.00%
D 2428 2054 2 2 0.08% 0.10%

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 1 162 5560 105.12 239 233 50.7
A 8 15 4443 83.08 239 233 50.7
A 4 2 3486 64.19 239 233 50.7
B 3 64 29995 621.16 243 236 47.9
B 4 80 13466 276.15 243 236 47.9
B 0 189 6580 132.42 243 236 47.9
C 3 233 33333 569.81 242 243 58.1
C 8 128 4616 75.3 242 243 58.1
C 8 112 2294 35.32 242 243 58.1
D 13 189 27229 460.73 236 229 58.6
D 2 14 25526 431.67 236 229 58.6
D 7 80 18460 311.1 236 229 58.6

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