ASTROSAT CZTI

Data Quality Report

Orbit 21738

Creation date: 2024-06-27T18:31:39.528101
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/AS1A07_005T01_9000003224_21738cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21738cztM0_level2_quad_clean.evt
Size (bytes)532,224,00070,704,000
Size507.6 MB 67.4 MB
Events in quadrant A3,513,254432,168
Events in quadrant B3,525,327440,814
Events in quadrant C3,297,453415,509
Events in quadrant D5,347,771405,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147322
B0146662
C0138962
D0202953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420691.074766%
B64201101.713396%
C64201131.760125%
D64194326.730020%

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 7545 6420 0 0 0.00% 0.00%
B 7545 6420 15 15 0.20% 0.23%
C 7545 6421 0 0 0.00% 0.00%
D 7544 6419 284 284 3.76% 4.42%

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 6 16 96809 565.44 849 833 169.7
A 15 174 87364 509.79 849 833 169.7
A 15 236 51446 298.18 849 833 169.7
B 3 64 58555 361.04 852 833 159.9
B 0 190 33855 206.55 852 833 159.9
B 0 228 31918 194.43 852 833 159.9
C 14 238 129892 682.18 812 817 189.2
C 13 61 5752 26.08 812 817 189.2
C 5 4 2490 8.84 812 817 189.2
D 12 235 1150750 5887.02 808 786 195.3
D 7 238 293509 1498.54 808 786 195.3
D 1 52 266543 1360.49 808 786 195.3

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