ASTROSAT CZTI

Data Quality Report

Orbit 30750

Creation date: 2024-06-27T20:19:10.515696
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/AS1A10_053T35_9000004438_30750cztM0_level2.evt modeM0/AS1A10_053T35_9000004438_30750cztM0_level2_quad_clean.evt
Size (bytes)654,909,12087,353,280
Size624.6 MB 83.3 MB
Events in quadrant A3,644,322544,206
Events in quadrant B5,974,485541,806
Events in quadrant C3,757,718528,716
Events in quadrant D5,954,953512,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154571
B0233871
C0155021
D0227031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74251642.208754%
B74263344.497711%
C74261792.410450%
D74263494.699704%

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 7635 7425 0 0 0.00% 0.00%
B 7636 7426 74 74 0.97% 1.00%
C 7636 7426 0 0 0.00% 0.00%
D 7636 7426 194 194 2.54% 2.61%

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 15 192 37158 191.98 930 908 188.8
A 0 13 19235 97.06 930 908 188.8
A 13 254 14522 72.1 930 908 188.8
B 6 159 1999702 11367.91 906 883 175.8
B 5 255 311821 1768.4 906 883 175.8
B 0 190 68210 382.91 906 883 175.8
C 14 238 141189 663.52 887 894 211.4
C 3 233 114889 539.14 887 894 211.4
C 0 10 17832 80.11 887 894 211.4
D 8 195 1766976 8080.03 899 872 218.6
D 12 227 380277 1735.8 899 872 218.6
D 13 138 119628 543.32 899 872 218.6

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