ASTROSAT CZTI

Data Quality Report

Orbit 39610

Creation date: 2024-06-27T22:06:46.927587
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_018T01_9000005488_39610cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39610cztM0_level2_quad_clean.evt
Size (bytes)398,134,08094,772,160
Size379.7 MB 90.4 MB
Events in quadrant A3,325,083635,480
Events in quadrant B2,930,981647,122
Events in quadrant C4,642,632610,457
Events in quadrant D3,386,400569,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136662
B0130161
C0178751
D0143511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5820250.429553%
B58201141.958763%
C58202364.054983%
D58201492.560137%

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 9137 5822 23 23 0.25% 0.40%
B 9137 5822 66 66 0.72% 1.13%
C 9137 5822 277 277 3.03% 4.76%
D 9137 5822 128 128 1.40% 2.20%

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 466858 3676.34 616 602 126.8
A 15 222 400088 3149.87 616 602 126.8
A 13 248 60076 468.94 616 602 126.8
B 5 255 361437 3058.81 610 593 118.0
B 5 172 133788 1129.07 610 593 118.0
B 4 170 25943 214.89 610 593 118.0
C 9 187 1899708 13729.81 596 599 138.3
C 15 214 256565 1850.53 596 599 138.3
C 15 208 139148 1001.66 596 599 138.3
D 2 249 477739 3245.45 597 579 147.0
D 1 52 190493 1291.72 597 579 147.0
D 13 171 114645 775.83 597 579 147.0

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