ASTROSAT CZTI

Data Quality Report

Orbit 28849

Creation date: 2024-06-27T19:57:09.510987
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/AS1A10_103T08_9000004136_28849cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28849cztM0_level2_quad_clean.evt
Size (bytes)816,540,480135,527,040
Size778.7 MB 129.2 MB
Events in quadrant A3,320,639988,981
Events in quadrant B4,290,7671,002,985
Events in quadrant C3,518,333980,137
Events in quadrant D13,170,560688,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136032
B0167632
C0142472
D0433842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A634180.126163%
B63412654.179152%
C63411021.608579%
D6341477375.272039%

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 7711 6342 0 0 0.00% 0.00%
B 7711 6342 167 167 2.17% 2.63%
C 7711 6341 0 0 0.00% 0.00%
D 7710 6340 4907 4907 63.64% 77.40%

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 5 98 94077 567.86 835 820 164.2
A 13 254 12247 69.58 835 820 164.2
A 0 226 7216 38.95 835 820 164.2
B 5 255 653468 4390.09 830 812 148.7
B 5 172 202283 1355.19 830 812 148.7
B 10 246 111989 747.83 830 812 148.7
C 14 238 148291 788.26 824 830 187.1
C 3 233 119240 632.97 824 830 187.1
C 14 254 20845 106.99 824 830 187.1
D 8 195 9501052 62623.62 655 641 151.7
D 1 52 1093715 7205.19 655 641 151.7
D 2 250 36988 239.59 655 641 151.7

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