ASTROSAT CZTI

Data Quality Report

Orbit 01340

Creation date: 2024-06-27T14:11:13.191625
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/AS1G04_002T02_9000000230_01340cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01340cztM0_level2_quad_clean.evt
Size (bytes)1,095,955,20096,264,000
Size1.0 GB 91.8 MB
Events in quadrant A8,257,027628,151
Events in quadrant B8,979,716624,792
Events in quadrant C7,969,451608,414
Events in quadrant D7,556,175601,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290862
B0312801
C0282831
D0270701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6478180.277864%
B6478671.034270%
C6478230.355048%
D6478681.049707%

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 7283 6479 268 268 3.68% 4.14%
B 7283 6478 654 654 8.98% 10.10%
C 7283 6478 201 201 2.76% 3.10%
D 7283 6478 240 240 3.30% 3.70%

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 32 594239 1240.48 1975 1990 477.4
A 15 127 63021 127.83 1975 1990 477.4
A 14 5 9343 15.4 1975 1990 477.4
B 8 4 844097 1744.67 2048 2054 482.6
B 6 53 173973 356.21 2048 2054 482.6
B 15 22 46816 92.74 2048 2054 482.6
C 15 241 330392 623.07 1890 1960 527.1
C 3 9 198747 373.33 1890 1960 527.1
C 3 79 31372 55.8 1890 1960 527.1
D 10 84 295929 520.13 1830 1894 565.3
D 1 83 228603 401.03 1830 1894 565.3
D 13 252 68287 117.44 1830 1894 565.3

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