ASTROSAT CZTI

Data Quality Report

Orbit 24648

Creation date: 2024-06-27T19:08:19.982033
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_191T01_9000003618_24648cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24648cztM0_level2_quad_clean.evt
Size (bytes)129,493,44034,225,920
Size123.5 MB 32.6 MB
Events in quadrant A834,609243,624
Events in quadrant B799,420245,882
Events in quadrant C1,364,016219,046
Events in quadrant D830,879228,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034421
B032971
C050371
D033841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1331120.901578%
B1331100.751315%
C133113610.217881%
D133090.676692%

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 1331 1331 2 2 0.15% 0.15%
B 1331 1331 0 0 0.00% 0.00%
C 1331 1331 22 22 1.65% 1.65%
D 1330 1330 0 0 0.00% 0.00%

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 6 16 15529 358.46 210 207 42.7
A 10 255 7110 161.5 210 207 42.7
A 13 254 2127 44.92 210 207 42.7
B 12 111 4301 104.24 204 200 39.3
B 11 111 3896 93.95 204 200 39.3
B 14 111 3766 90.64 204 200 39.3
C 7 247 542718 11730.81 196 198 46.2
C 14 238 32128 690.42 196 198 46.2
C 2 16 17137 366.27 196 198 46.2
D 12 235 18863 368.35 207 201 50.7
D 7 238 16711 325.88 207 201 50.7
D 8 195 12274 238.3 207 201 50.7

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