ASTROSAT CZTI

Data Quality Report

Orbit 06771

Creation date: 2024-06-27T15:11:28.652183
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/AS1G06_086T02_9000000936_06771cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06771cztM0_level2_quad_clean.evt
Size (bytes)1,942,937,280226,941,120
Size1.8 GB 216.4 MB
Events in quadrant A10,301,8151,418,113
Events in quadrant B10,459,5661,433,284
Events in quadrant C16,304,9471,183,396
Events in quadrant D20,284,7731,314,067

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456745
B0458844
C0637354
D0757604

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221232411.089364%
B221232601.175247%
C22123299713.546987%
D2212318538.375898%

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 25898 22127 9 9 0.03% 0.04%
B 25898 22127 4 4 0.02% 0.02%
C 25898 22127 1981 1981 7.65% 8.95%
D 25898 22127 1270 1270 4.90% 5.74%

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 8 15 146746 271.47 2604 2541 531.2
A 15 239 73385 133.37 2604 2541 531.2
A 13 248 40646 71.73 2604 2541 531.2
B 4 81 113907 222.47 2620 2553 500.5
B 4 48 106206 207.09 2620 2553 500.5
B 0 214 64402 123.57 2620 2553 500.5
C 9 247 7097385 13229.44 2335 2349 536.3
C 9 16 77471 140.07 2335 2349 536.3
C 13 61 18382 29.9 2335 2349 536.3
D 12 220 5760124 9584.76 2460 2382 600.7
D 2 33 1664600 2767.05 2460 2382 600.7
D 8 195 1512217 2513.38 2460 2382 600.7

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