ASTROSAT CZTI

Data Quality Report

Orbit 39040

Creation date: 2024-06-27T21:59:37.761134
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_077T06_9000005430_39040cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39040cztM0_level2_quad_clean.evt
Size (bytes)441,912,96099,653,760
Size421.4 MB 95.0 MB
Events in quadrant A7,497,934603,841
Events in quadrant B2,657,179724,899
Events in quadrant C2,793,588682,551
Events in quadrant D2,994,871632,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260153
B0110172
C0113302
D0123492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5337114521.454000%
B5337100.187371%
C533750.093686%
D5337450.843170%

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 7341 5338 1047 1047 14.26% 19.61%
B 7341 5338 2 2 0.03% 0.04%
C 7341 5338 1 1 0.01% 0.02%
D 7341 5338 41 41 0.56% 0.77%

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 15 222 4568451 36124.88 629 619 126.4
A 10 83 416025 3285.25 629 619 126.4
A 6 10 51385 401.48 629 619 126.4
B 5 172 26611 212.21 657 640 122.4
B 15 85 25823 205.77 657 640 122.4
B 0 190 21544 170.81 657 640 122.4
C 15 214 222872 1482.26 647 654 149.9
C 3 233 14598 93.01 647 654 149.9
C 2 16 12504 79.04 647 654 149.9
D 2 249 200361 1265.8 650 633 157.8
D 1 47 116889 736.79 650 633 157.8
D 2 250 92079 579.55 650 633 157.8

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