ASTROSAT CZTI

Data Quality Report

Orbit 42687

Creation date: 2024-06-27T22:43:03.483790
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/AS1A05_013T01_9000005822_42687cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42687cztM0_level2_quad_clean.evt
Size (bytes)347,857,92088,444,800
Size331.7 MB 84.3 MB
Events in quadrant A3,268,782588,805
Events in quadrant B2,411,978609,791
Events in quadrant C2,886,752579,506
Events in quadrant D3,884,579518,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130632
B0110862
C0120242
D0151812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54511412.586681%
B5451100.183453%
C545180.146762%
D54512664.879839%

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 7123 5452 105 105 1.47% 1.93%
B 7123 5452 4 4 0.06% 0.07%
C 7123 5452 5 5 0.07% 0.09%
D 7123 5452 236 236 3.31% 4.33%

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 576518 4773.63 587 576 120.7
A 13 248 372770 3084.89 587 576 120.7
A 15 237 32714 266.37 587 576 120.7
B 5 255 43446 374.39 590 572 114.5
B 0 245 16548 139.51 590 572 114.5
B 12 111 14861 124.78 590 572 114.5
C 15 214 227314 1696.54 572 576 133.6
C 8 79 201670 1504.67 572 576 133.6
C 3 233 63624 471.75 572 576 133.6
D 1 52 773051 5585.74 562 544 138.3
D 1 47 413419 2985.36 562 544 138.3
D 2 249 251061 1811.4 562 544 138.3

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