ASTROSAT CZTI

Data Quality Report

Orbit 18269

Creation date: 2024-06-27T17:47:38.427961
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_019T01_9000002718_18269cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18269cztM0_level2_quad_clean.evt
Size (bytes)329,783,04069,431,040
Size314.5 MB 66.2 MB
Events in quadrant A2,036,668472,588
Events in quadrant B1,981,537475,291
Events in quadrant C1,933,539443,236
Events in quadrant D3,758,681424,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085001
B084531
C083271
D0141291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4063340.836820%
B4063180.443022%
C4063240.590697%
D40632626.448437%

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 4063 4063 14 14 0.34% 0.34%
B 4063 4063 1 1 0.02% 0.02%
C 4063 4063 0 0 0.00% 0.00%
D 4063 4063 200 200 4.92% 4.92%

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 15 174 57374 561.58 504 495 101.3
A 4 2 26089 252.69 504 495 101.3
A 12 16 9516 89.07 504 495 101.3
B 7 220 14849 150.63 498 487 95.3
B 4 216 14289 144.76 498 487 95.3
B 12 111 10515 105.18 498 487 95.3
C 14 238 73484 666.87 469 473 109.5
C 0 207 14746 130.37 469 473 109.5
C 3 233 14681 129.77 469 473 109.5
D 1 52 1184246 10356.08 468 454 114.3
D 7 238 617922 5401.75 468 454 114.3
D 13 168 147484 1286.25 468 454 114.3

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