ASTROSAT CZTI

Data Quality Report

Orbit 25962

Creation date: 2024-06-27T19:23:18.446367
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/AS1A07_068T01_9000003760_25962cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25962cztM0_level2_quad_clean.evt
Size (bytes)641,410,560126,201,600
Size611.7 MB 120.4 MB
Events in quadrant A4,623,287804,911
Events in quadrant B4,752,120803,830
Events in quadrant C4,701,631767,547
Events in quadrant D4,692,392775,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197160
B0200080
C0198680
D0204800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9674650.671904%
B9673860.889073%
C96741251.292123%
D9674750.775274%

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 11324 9676 0 0 0.00% 0.00%
B 11324 9676 0 0 0.00% 0.00%
C 11324 9676 0 0 0.00% 0.00%
D 11324 9676 16 16 0.14% 0.17%

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 13 254 13664 51.29 1197 1174 243.5
A 3 137 11432 42.12 1197 1174 243.5
A 0 226 10170 36.94 1197 1174 243.5
B 0 190 78827 341.8 1182 1153 227.2
B 12 111 28303 119.47 1182 1153 227.2
B 11 111 25558 107.39 1182 1153 227.2
C 14 238 181069 676.0 1136 1143 266.2
C 3 233 98046 364.07 1136 1143 266.2
C 13 61 7824 25.1 1136 1143 266.2
D 7 80 118094 425.81 1154 1124 274.7
D 13 168 66962 239.67 1154 1124 274.7
D 1 52 66004 236.18 1154 1124 274.7

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