ASTROSAT CZTI

Data Quality Report

Orbit 42621

Creation date: 2024-06-27T22:42:19.429441
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_174T01_9000005820_42621cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42621cztM0_level2_quad_clean.evt
Size (bytes)302,866,56083,301,120
Size288.8 MB 79.4 MB
Events in quadrant A2,799,350560,242
Events in quadrant B2,261,757572,173
Events in quadrant C2,408,767554,134
Events in quadrant D3,363,056495,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111282
B099612
C099482
D0132172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4852110.226711%
B485230.061830%
C485280.164880%
D48521964.039571%

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 6944 4853 3 3 0.04% 0.06%
B 6944 4853 0 0 0.00% 0.00%
C 6944 4853 4 4 0.06% 0.08%
D 6944 4853 177 177 2.55% 3.65%

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 509553 4453.93 557 546 114.3
A 2 79 99027 861.73 557 546 114.3
A 13 248 25550 218.79 557 546 114.3
B 0 245 46994 439.71 548 534 105.7
B 7 219 32373 301.33 548 534 105.7
B 12 111 13381 121.59 548 534 105.7
C 15 214 205572 1595.65 546 551 128.5
C 14 254 43645 335.39 546 551 128.5
C 7 220 10570 77.98 546 551 128.5
D 1 52 346580 2626.95 539 523 131.7
D 13 249 339465 2572.93 539 523 131.7
D 5 70 122241 923.97 539 523 131.7

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