ASTROSAT CZTI

Data Quality Report

Orbit 39882

Creation date: 2024-06-27T22:07:59.097010
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/AS1A12_011T22_9000005492_39882cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39882cztM0_level2_quad_clean.evt
Size (bytes)10,509,1202,047,680
Size10.0 MB 2.0 MB
Events in quadrant A96,13512,470
Events in quadrant B73,98711,067
Events in quadrant C78,38610,160
Events in quadrant D123,9628,820

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0741364
B0632312
C0636317
D0915442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064
B062
C062
D062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139892809648168139891379798062
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16600.000000%
B16000.000000%
C15800.000000%
D168158.928571%

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 321 197 0 0 0.00% 0.00%
B 325 193 0 0 0.00% 0.00%
C 325 189 0 0 0.00% 0.00%
D 325 195 9 9 2.77% 4.62%

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 11831 2076.22 19 18 5.7
A 2 79 5204 911.48 19 18 5.7
A 9 143 2432 424.28 19 18 5.7
B 4 170 915 164.99 18 17 5.4
B 12 111 416 73.31 18 17 5.4
B 11 111 391 68.72 18 17 5.4
C 15 214 6282 1039.46 17 17 6.0
C 14 254 636 102.7 17 17 6.0
C 1 16 399 63.38 17 17 6.0
D 12 227 23876 3771.46 18 18 6.3
D 2 249 17311 2733.67 18 18 6.3
D 2 250 5351 843.04 18 18 6.3

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