ASTROSAT CZTI

Data Quality Report

Orbit 00144

Creation date: 2024-06-27T13:56:58.000556
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_140T01_9000000004_00144cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00144cztM0_level2_quad_clean.evt
Size (bytes)237,864,96020,689,920
Size226.8 MB 19.7 MB
Events in quadrant A1,685,358131,480
Events in quadrant B1,713,330136,838
Events in quadrant C1,606,650133,949
Events in quadrant D2,101,848118,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06531
B06230
C06236
D06434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189
B0167
C0178
D0189

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120416015
B0128056718
C0117946012
D0148177561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141210.070822%
B141500.000000%
C143100.000000%
D13981309.298999%

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 5829 1452 61 61 1.05% 4.20%
B 5845 1451 29 29 0.50% 2.00%
C 5855 1484 16 16 0.27% 1.08%
D 5785 1431 216 216 3.73% 15.09%

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 13 9 3897 47.16 432 422 73.7
A 13 160 2176 23.8 432 422 73.7
A 13 239 1926 20.41 432 422 73.7
B 0 212 22306 226.62 432 433 96.5
B 8 236 7872 77.07 432 433 96.5
B 14 50 7777 76.09 432 433 96.5
C 10 69 46320 412.64 395 409 111.3
C 3 32 3599 28.67 395 409 111.3
C 2 192 1731 11.88 395 409 111.3
D 14 53 338568 3035.85 411 397 111.4
D 11 164 38956 346.15 411 397 111.4
D 13 218 23097 203.78 411 397 111.4

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