ASTROSAT CZTI

Data Quality Report

Orbit 01062

Creation date: 2024-06-27T14:06:53.152107
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/AS1P01_998T02_9000000190_01062cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01062cztM0_level2_quad_clean.evt
Size (bytes)1,188,947,520124,257,600
Size1.1 GB 118.5 MB
Events in quadrant A8,631,693822,320
Events in quadrant B9,143,238829,610
Events in quadrant C9,199,759802,377
Events in quadrant D8,539,044790,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309142
B0324652
C0326346
D0306782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744760.080569%
B7447210.281993%
C7446200.268601%
D7447710.953404%

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 7847 7448 189 189 2.41% 2.54%
B 7847 7448 271 271 3.45% 3.64%
C 7846 7447 341 341 4.35% 4.58%
D 7847 7448 273 273 3.48% 3.67%

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 15 233 19075 31.39 2243 2257 535.7
A 11 79 8816 12.24 2243 2257 535.7
A 3 111 6608 8.12 2243 2257 535.7
B 5 191 76505 134.95 2347 2357 549.5
B 5 249 46211 79.81 2347 2357 549.5
B 15 22 44075 75.93 2347 2357 549.5
C 15 241 389271 638.26 2172 2253 606.4
C 9 52 193855 315.98 2172 2253 606.4
C 3 79 39128 60.81 2172 2253 606.4
D 7 207 197205 305.83 2083 2161 637.8
D 1 83 121585 187.26 2083 2161 637.8
D 13 13 87851 134.36 2083 2161 637.8

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