ASTROSAT CZTI

Data Quality Report

Orbit 20240310_A13_028T01_9000006122_level2

Creation date: 2024-03-13T11:25:25.074217
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/AS1A13_028T01_9000006122cztM0_level2.fits modeM0/AS1A13_028T01_9000006122cztM0_level2_quad_clean.evt
Size (bytes)1,467,014,4001,406,491,200
Size1.4 GB 1.3 GB
Events in quadrant A8,776,8208,413,931
Events in quadrant B8,502,4168,510,037
Events in quadrant C8,429,9307,326,986
Events in quadrant D7,465,7007,107,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033320
B033300
C033320
D033320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02170
C02170
D02170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05337820
B03857070
C04947450
D04452200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16402152153.179471%
B16405057663.514782%
C1640442015512.286338%
D16401987835.354867%

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 185116 164048 0 0 0.00% 0.00%
B 185116 163856 0 0 0.00% 0.00%
C 185116 164035 0 0 0.00% 0.00%
D 185116 163491 0 0 0.00% 0.00%

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 7 110 7024 8.54 2289 2141 572.1
A 0 29 6821 8.18 2289 2141 572.1
A 15 236 6756 8.07 2289 2141 572.1
B 2 9 8061 13.42 2252 2142 441.1
B 2 8 6389 9.63 2252 2142 441.1
B 3 17 6090 8.95 2252 2142 441.1
C 3 202 6650 7.97 2228 2074 573.9
C 3 203 6431 7.59 2228 2074 573.9
C 1 81 6407 7.55 2228 2074 573.9
D 3 14 5526 6.07 2146 1945 590.1
D 10 189 5405 5.86 2146 1945 590.1
D 4 12 5342 5.76 2146 1945 590.1

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