ASTROSAT CZTI

Data Quality Report

Orbit 20151210_P01_180T10_9000000196_level2

Creation date: 2025-10-24T21:12:43.775693
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/AS1P01_180T10_9000000196cztM0_level2.fits modeM0/AS1P01_180T10_9000000196cztM0_level2_quad_clean.evt
Size (bytes)27,397,44019,771,200
Size26.1 MB 18.9 MB
Events in quadrant A159,176101,479
Events in quadrant B147,32883,585
Events in quadrant C153,92890,452
Events in quadrant D134,80487,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140730
B0162390
C0141260
D0133680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330430.090799%
B33042166.537530%
C330430.090799%
D330430.090799%

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 4388 3303 0 0 0.00% 0.00%
B 4388 3296 0 0 0.00% 0.00%
C 4388 3303 0 0 0.00% 0.00%
D 4389 3303 0 0 0.00% 0.00%

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 7 110 159 10.07 41 39 11.9
A 0 29 149 9.23 41 39 11.9
A 14 30 135 8.06 41 39 11.9
B 14 254 108 7.44 39 37 9.5
B 2 9 104 7.02 39 37 9.5
B 14 223 94 5.97 39 37 9.5
C 12 241 108 5.9 40 38 11.9
C 2 191 104 5.56 40 38 11.9
C 14 38 103 5.48 40 38 11.9
D 6 238 106 6.55 38 35 10.8
D 6 44 100 6.0 38 35 10.8
D 3 30 99 5.9 38 35 10.8

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