ASTROSAT CZTI

Data Quality Report

Orbit 30269

Creation date: 2024-06-27T20:12:56.022022
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_007T01_9000004350_30269cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30269cztM0_level2_quad_clean.evt
Size (bytes)842,713,92099,745,920
Size803.7 MB 95.1 MB
Events in quadrant A5,308,293667,964
Events in quadrant B12,236,687518,416
Events in quadrant C3,718,872676,746
Events in quadrant D3,790,148673,610

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201761
B0411541
C0151031
D0155763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69275998.647322%
B6927347750.194890%
C69272533.652375%
D69261031.487150%

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 8027 6929 389 389 4.85% 5.61%
B 8027 6927 2552 2552 31.79% 36.84%
C 8027 6929 0 0 0.00% 0.00%
D 8026 6928 21 21 0.26% 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 14 239 1878465 10657.64 883 867 176.2
A 8 192 21296 115.96 883 867 176.2
A 13 254 12406 65.5 883 867 176.2
B 6 36 7613998 52291.02 757 738 145.6
B 6 159 1613620 11077.94 757 738 145.6
B 12 111 17269 113.54 757 738 145.6
C 14 238 166098 807.54 879 887 204.6
C 3 233 75198 363.23 879 887 204.6
C 14 254 39473 188.61 879 887 204.6
D 8 195 285909 1326.55 893 876 214.9
D 2 250 62268 285.72 893 876 214.9
D 2 234 24760 111.16 893 876 214.9

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