ASTROSAT CZTI

Data Quality Report

Orbit 39262

Creation date: 2024-06-27T22:02:26.159777
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_093T02_9000005452_39262cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39262cztM0_level2_quad_clean.evt
Size (bytes)360,656,64044,187,840
Size343.9 MB 42.1 MB
Events in quadrant A1,641,718361,380
Events in quadrant B1,916,914355,566
Events in quadrant C1,581,955346,605
Events in quadrant D7,957,10145,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068011
B078161
C066031
D0258341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A322230.093110%
B32221304.034761%
C322220.062073%
D3222288789.602731%

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 3222 3222 2 2 0.06% 0.06%
B 3222 3222 88 88 2.73% 2.73%
C 3222 3222 0 0 0.00% 0.00%
D 3222 3222 2546 2546 79.02% 79.02%

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 244252 3231.62 361 353 75.5
A 13 254 4963 61.08 361 353 75.5
A 3 137 3795 45.61 361 353 75.5
B 5 172 206171 2969.02 351 340 69.3
B 15 35 144178 2074.8 351 340 69.3
B 5 255 109634 1576.52 351 340 69.3
C 15 214 143758 1714.9 352 354 83.6
C 3 233 57764 686.54 352 354 83.6
C 0 10 2662 27.6 352 354 83.6
D 12 235 6672968 129736.24 201 194 51.4
D 12 227 276556 5373.2 201 194 51.4
D 2 120 143530 2786.83 201 194 51.4

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