ASTROSAT CZTI

Data Quality Report

Orbit 20962

Creation date: 2024-06-27T18:21:48.984204
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/AS1T03_131T01_9000003090_20962cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20962cztM0_level2_quad_clean.evt
Size (bytes)510,330,24081,051,840
Size486.7 MB 77.3 MB
Events in quadrant A3,772,230492,522
Events in quadrant B3,504,226507,048
Events in quadrant C3,397,967495,720
Events in quadrant D4,313,473479,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154822
B0145322
C0142302
D0173222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68902113.062409%
B68901281.857765%
C68891522.206416%
D68892914.224125%

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 7645 6891 85 85 1.11% 1.23%
B 7645 6891 3 3 0.04% 0.04%
C 7644 6890 0 0 0.00% 0.00%
D 7644 6890 154 154 2.01% 2.24%

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 5 16 458814 2619.51 862 843 174.8
A 0 226 7356 37.25 862 843 174.8
A 3 137 6879 34.52 862 843 174.8
B 7 220 49025 291.75 866 844 165.1
B 12 111 19786 114.7 866 844 165.1
B 11 111 17484 100.76 866 844 165.1
C 14 238 131198 667.28 835 838 195.4
C 7 247 11252 53.31 835 838 195.4
C 13 61 5914 25.98 835 838 195.4
D 7 238 499523 2461.59 836 812 202.6
D 1 52 296390 1458.94 836 812 202.6
D 5 222 233283 1147.45 836 812 202.6

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