ASTROSAT CZTI

Data Quality Report

Orbit 21297

Creation date: 2024-06-27T18:26:04.857663
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_140T01_9000003142_21297cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21297cztM0_level2_quad_clean.evt
Size (bytes)588,389,760100,203,840
Size561.1 MB 95.6 MB
Events in quadrant A3,875,289637,922
Events in quadrant B3,849,080648,581
Events in quadrant C3,890,703627,872
Events in quadrant D5,681,865584,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167122
B0164672
C0165712
D0222372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77061411.829743%
B77061441.868674%
C77071672.166861%
D77077129.238355%

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 8331 7709 32 32 0.38% 0.42%
B 8331 7709 7 7 0.08% 0.09%
C 8332 7709 4 4 0.05% 0.05%
D 8332 7711 606 606 7.27% 7.86%

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 154561 811.67 933 913 189.3
A 9 143 73178 381.75 933 913 189.3
A 10 253 43376 224.32 933 913 189.3
B 0 230 40867 221.93 935 911 180.0
B 3 64 40766 221.36 935 911 180.0
B 0 245 28178 151.45 935 911 180.0
C 3 233 274871 1289.2 892 895 212.5
C 14 238 138823 649.02 892 895 212.5
C 13 61 6276 25.32 892 895 212.5
D 13 174 1754119 8186.32 879 853 214.2
D 1 52 313497 1459.79 879 853 214.2
D 12 235 147274 683.67 879 853 214.2

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