ASTROSAT CZTI

Data Quality Report

Orbit 40708

Creation date: 2024-06-27T22:19:25.858014
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_029T02_9000005558_40708cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40708cztM0_level2_quad_clean.evt
Size (bytes)255,263,04065,508,480
Size243.4 MB 62.5 MB
Events in quadrant A2,150,751446,010
Events in quadrant B2,087,669461,371
Events in quadrant C2,783,731414,300
Events in quadrant D2,115,059381,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108502022
B0113492508
C0138883084
D0112202128

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010121
B010216
C010022
D09819

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A401060.149626%
B3990501.253133%
C38831794.609838%
D40282686.653426%

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 7278 4339 3 3 0.04% 0.07%
B 7278 4294 34 34 0.47% 0.79%
C 7277 4203 198 198 2.72% 4.71%
D 7278 4339 36 36 0.49% 0.83%

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 411692 4528.4 442 435 90.8
A 2 79 16044 171.87 442 435 90.8
A 13 248 7061 72.96 442 435 90.8
B 0 190 108531 1263.57 440 428 85.6
B 5 255 102802 1196.61 440 428 85.6
B 0 229 100319 1167.59 440 428 85.6
C 9 187 884183 9212.29 408 411 95.9
C 15 214 169347 1760.96 408 411 95.9
C 12 249 134109 1393.65 408 411 95.9
D 2 249 180396 1754.65 412 401 102.6
D 12 191 102372 994.04 412 401 102.6
D 13 249 69541 674.0 412 401 102.6

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