ASTROSAT CZTI

Data Quality Report

Orbit 23867

Creation date: 2024-06-27T18:59:32.827656
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_149T01_9000003534_23867cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23867cztM0_level2_quad_clean.evt
Size (bytes)863,789,760181,252,800
Size823.8 MB 172.9 MB
Events in quadrant A5,347,0781,227,665
Events in quadrant B5,495,0211,235,187
Events in quadrant C5,635,6561,150,075
Events in quadrant D8,950,4271,127,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230924
B0234812
C0239054
D0339852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108271171.080632%
B108281131.043591%
C108271911.764108%
D108284854.479128%

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 13252 10829 4 4 0.03% 0.04%
B 13253 10830 11 11 0.08% 0.10%
C 13253 10830 22 22 0.17% 0.20%
D 13253 10830 308 308 2.32% 2.84%

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 4 2 20784 71.16 1377 1349 273.1
A 2 250 20497 70.11 1377 1349 273.1
A 13 254 18735 63.66 1377 1349 273.1
B 0 189 57639 222.98 1359 1331 252.5
B 0 190 30607 115.93 1359 1331 252.5
B 12 111 29588 111.9 1359 1331 252.5
C 7 247 327633 1113.93 1278 1286 293.0
C 14 238 210003 712.42 1278 1286 293.0
C 0 10 105658 356.26 1278 1286 293.0
D 8 195 1887021 5955.37 1307 1268 316.6
D 9 35 1443877 4555.88 1307 1268 316.6
D 1 52 460452 1450.14 1307 1268 316.6

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