ASTROSAT CZTI

Data Quality Report

Orbit 39377

Creation date: 2024-06-27T22:03:51.322538
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/AS1A12_018T01_9000005470_39377cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39377cztM0_level2_quad_clean.evt
Size (bytes)1,097,202,240214,827,840
Size1.0 GB 204.9 MB
Events in quadrant A6,596,4421,535,494
Events in quadrant B8,688,9281,513,966
Events in quadrant C7,302,3481,439,208
Events in quadrant D17,014,6761,111,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273033
B0348182
C0301184
D0597172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13096220.167990%
B130966464.932804%
C130952942.245132%
D13096294722.503054%

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 19286 13099 7 7 0.04% 0.05%
B 19286 13099 434 434 2.25% 3.31%
C 19286 13099 238 238 1.23% 1.82%
D 19286 13099 2536 2536 13.15% 19.36%

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 10 83 916269 3147.16 1454 1428 290.7
A 13 248 19027 60.54 1454 1428 290.7
A 13 254 17750 56.15 1454 1428 290.7
B 5 172 1634506 6136.33 1411 1375 266.1
B 5 200 1229810 4615.73 1411 1375 266.1
B 4 170 179308 668.57 1411 1375 266.1
C 14 254 1246299 3947.51 1377 1384 315.4
C 15 214 536995 1698.37 1377 1384 315.4
C 9 187 87321 272.5 1377 1384 315.4
D 12 235 11315500 36904.96 1272 1235 306.6
D 13 249 364053 1183.44 1272 1235 306.6
D 6 239 191110 619.34 1272 1235 306.6

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