ASTROSAT CZTI

Data Quality Report

Orbit 01176

Creation date: 2024-06-27T14:08:41.478818
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_997T02_9000000218_01176cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01176cztM0_level2_quad_clean.evt
Size (bytes)1,367,357,760110,903,040
Size1.3 GB 105.8 MB
Events in quadrant A9,136,957740,083
Events in quadrant B9,638,061737,579
Events in quadrant C9,121,703711,874
Events in quadrant D13,015,800644,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325361
B0339710
C0324150
D0443440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7529100.132820%
B752990.119538%
C7529120.159384%
D7529206427.413999%

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 7529 7529 364 364 4.83% 4.83%
B 7529 7529 407 407 5.41% 5.41%
C 7529 7529 307 307 4.08% 4.08%
D 7529 7529 2634 2634 34.98% 34.98%

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 11 79 8788 11.12 2378 2392 575.1
A 3 111 7579 9.02 2378 2392 575.1
A 12 251 7290 8.52 2378 2392 575.1
B 2 32 114310 192.27 2451 2466 581.7
B 15 22 45730 74.37 2451 2466 581.7
B 6 53 43899 71.23 2451 2466 581.7
C 15 241 344507 549.48 2228 2304 622.8
C 3 79 31204 46.4 2228 2304 622.8
C 3 111 30290 44.94 2228 2304 622.8
D 1 239 5009656 7840.7 2064 2143 638.7
D 13 73 113445 174.28 2064 2143 638.7
D 2 16 87143 133.09 2064 2143 638.7

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