ASTROSAT CZTI

Data Quality Report

Orbit 35520

Creation date: 2022-04-24T02:30:33.674329
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/AS1A11_097T07_9000005084_35520cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35520cztM0_level2_quad_clean.evt
Size (bytes)146,983,68039,168,000
Size140.2 MB 37.4 MB
Events in quadrant A1,005,013263,679
Events in quadrant B1,037,010266,364
Events in quadrant C1,239,273259,337
Events in quadrant D1,033,398252,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042861
B043911
C049201
D043161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197860.303337%
B1978150.758342%
C1978582.932255%
D197890.455005%

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 1978 1978 3 3 0.15% 0.15%
B 1978 1978 8 8 0.40% 0.40%
C 1978 1978 37 37 1.87% 1.87%
D 1978 1978 6 6 0.30% 0.30%

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 10 83 60109 1270.53 227 223 47.1
A 15 169 36295 765.3 227 223 47.1
A 9 143 19055 399.54 227 223 47.1
B 5 172 73567 1660.66 225 220 44.2
B 5 236 64288 1450.57 225 220 44.2
B 12 111 5153 111.69 225 220 44.2
C 0 10 166904 3164.52 221 222 52.7
C 15 214 83743 1585.68 221 222 52.7
C 15 159 79725 1509.39 221 222 52.7
D 8 195 86054 1532.99 225 219 56.0
D 10 118 19831 350.26 225 219 56.0
D 12 6 19637 346.8 225 219 56.0

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