ASTROSAT CZTI

Data Quality Report

Orbit 35336

Creation date: 2022-04-13T10:57:39.022126
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/AS1A11_093T01_9000005064_35336cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35336cztM0_level2_quad_clean.evt
Size (bytes)1,328,688,000171,944,640
Size1.2 GB 164.0 MB
Events in quadrant A6,308,4591,124,927
Events in quadrant B17,488,9401,004,384
Events in quadrant C6,906,4521,129,466
Events in quadrant D8,668,9641,059,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263544
B0607873
C0276283
D0341743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12861310.241039%
B12861444234.538527%
C128611200.933053%
D128613792.946894%

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 19230 12864 21 21 0.11% 0.16%
B 19229 12862 3584 3584 18.64% 27.87%
C 19230 12864 111 111 0.58% 0.86%
D 19230 12864 351 351 1.83% 2.73%

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 185193 594.83 1552 1523 308.8
A 8 192 51505 161.87 1552 1523 308.8
A 13 6 36087 111.94 1552 1523 308.8
B 5 236 7774422 32216.57 1306 1278 241.3
B 5 172 4287594 17765.06 1306 1278 241.3
B 4 232 174700 718.76 1306 1278 241.3
C 15 214 525840 1556.27 1484 1491 336.9
C 0 10 501765 1484.81 1484 1491 336.9
C 1 23 33151 93.97 1484 1491 336.9
D 1 52 638153 1794.95 1486 1445 354.7
D 8 195 504135 1417.14 1486 1445 354.7
D 10 118 328305 921.46 1486 1445 354.7

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