ASTROSAT CZTI

Data Quality Report

Orbit 28911

Creation date: 2024-06-27T19:58:08.894190
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_064T02_9000004146_28911cztM0_level2.evt modeM0/AS1A10_064T02_9000004146_28911cztM0_level2_quad_clean.evt
Size (bytes)1,023,972,48089,812,800
Size976.5 MB 85.7 MB
Events in quadrant A3,870,205587,770
Events in quadrant B3,840,408606,900
Events in quadrant C7,925,507561,692
Events in quadrant D14,845,052415,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164612
B0163192
C0292302
D0494112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78601942.468193%
B78602122.697201%
C786086210.966921%
D7860504264.147583%

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 8035 7863 3 3 0.04% 0.04%
B 8035 7863 0 0 0.00% 0.00%
C 8035 7863 268 268 3.34% 3.41%
D 8035 7863 4928 4928 61.33% 62.67%

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 14 235 89365 444.19 976 952 199.0
A 13 254 14267 66.89 976 952 199.0
A 3 137 9833 44.62 976 952 199.0
B 12 111 23560 119.41 967 940 189.4
B 11 111 21565 108.88 967 940 189.4
B 14 111 19632 98.68 967 940 189.4
C 3 233 4189100 19647.54 907 910 213.2
C 14 238 145618 678.85 907 910 213.2
C 15 208 35058 160.19 907 910 213.2
D 8 195 9687575 55587.64 725 702 174.3
D 1 52 2253551 12927.86 725 702 174.3
D 12 79 88167 501.91 725 702 174.3

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