ASTROSAT CZTI

Data Quality Report

Orbit 07325

Creation date: 2024-06-27T15:18:29.221244
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/AS1A02_178T01_9000001006_07325cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07325cztM0_level2_quad_clean.evt
Size (bytes)2,240,504,640445,006,080
Size2.1 GB 424.4 MB
Events in quadrant A19,475,3942,785,484
Events in quadrant B15,768,3422,942,643
Events in quadrant C14,607,1502,867,010
Events in quadrant D15,872,5942,715,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0792958
B0680537
C0652257
D0701387

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06460
B06460
C06460
D06460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3154017355.500951%
B315403611.144578%
C315401590.504122%
D315404241.344325%

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 38886 31543 1091 1091 2.81% 3.46%
B 38886 31542 19 19 0.05% 0.06%
C 38886 31544 6 6 0.02% 0.02%
D 38886 31544 172 172 0.44% 0.55%

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 15 234 3786672 5127.53 3679 3609 737.8
A 8 15 808671 1091.17 3679 3609 737.8
A 14 111 359239 482.02 3679 3609 737.8
B 0 214 270496 375.57 3820 3730 710.3
B 11 51 261966 363.56 3820 3730 710.3
B 4 81 189201 261.12 3820 3730 710.3
C 9 68 178191 207.22 3683 3705 842.0
C 1 16 40470 43.66 3683 3705 842.0
C 13 61 28532 29.49 3683 3705 842.0
D 2 216 771166 870.03 3642 3534 882.3
D 14 34 424344 476.94 3642 3534 882.3
D 12 233 355267 398.65 3642 3534 882.3

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