ASTROSAT CZTI

Data Quality Report

Orbit 14644

Creation date: 2024-06-27T16:57:55.391239
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_075T04_9000002160_14644cztM0_level2.evt modeM0/AS1A04_075T04_9000002160_14644cztM0_level2_quad_clean.evt
Size (bytes)220,196,16019,854,720
Size210.0 MB 18.9 MB
Events in quadrant A1,561,564102,485
Events in quadrant B1,534,273100,816
Events in quadrant C1,730,06096,260
Events in quadrant D1,647,64097,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063471
B062781
C071121
D067011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2841471.654347%
B2841511.795143%
C2841351.231961%
D2841541.900739%

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 2842 2842 0 0 0.00% 0.00%
B 2842 2842 1 1 0.04% 0.04%
C 2842 2842 0 0 0.00% 0.00%
D 2842 2842 6 6 0.21% 0.21%

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 30765 389.3 377 369 78.1
A 8 15 20745 260.97 377 369 78.1
A 0 23 14172 176.78 377 369 78.1
B 4 142 19073 264.82 371 363 70.7
B 0 205 14581 201.24 371 363 70.7
B 0 230 12125 166.48 371 363 70.7
C 3 233 317629 3763.53 359 362 84.3
C 8 128 6952 78.17 359 362 84.3
C 8 112 3327 35.17 359 362 84.3
D 12 110 212716 2183.81 363 356 97.2
D 10 199 13622 136.42 363 356 97.2
D 15 0 11009 109.55 363 356 97.2

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