ASTROSAT CZTI

Data Quality Report

Orbit 20151109_P01_126T03_9000000088_level2

Creation date: 2025-01-04T19:30:57.918274
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_126T03_9000000088cztM0_level2.fits modeM0/AS1P01_126T03_9000000088cztM0_level2_quad_clean.evt
Size (bytes)237,882,240263,119,680
Size226.9 MB 250.9 MB
Events in quadrant A1,353,0461,537,921
Events in quadrant B1,362,7721,587,428
Events in quadrant C1,346,6761,490,001
Events in quadrant D1,142,7601,353,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05940
B05940
C05940
D05940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01252120
B01204650
C01136040
D01218350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290811800.618961%
B29081330.113476%
C290811300.447027%
D290815341.836250%

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 44020 29074 0 0 0.00% 0.00%
B 44020 29072 0 0 0.00% 0.00%
C 44020 29065 0 0 0.00% 0.00%
D 44020 29071 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 0 29 1258 11.01 351 329 84.3
A 7 110 1227 10.65 351 329 84.3
A 14 30 978 7.69 351 329 84.3
B 2 9 1182 13.14 359 343 63.9
B 14 254 913 8.93 359 343 63.9
B 5 225 852 7.97 359 343 63.9
C 12 241 919 6.63 356 331 88.7
C 1 81 916 6.6 356 331 88.7
C 2 191 913 6.57 356 331 88.7
D 6 231 897 7.48 326 298 80.1
D 11 82 856 6.97 326 298 80.1
D 6 44 836 6.72 326 298 80.1

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