ASTROSAT CZTI

Data Quality Report

Orbit 42942

Creation date: 2024-06-27T22:46:05.216213
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/AS1A09_036T05_9000005832_42942cztM0_level2.fits modeM0/AS1A09_036T05_9000005832_42942cztM0_level2_quad_clean.evt
Size (bytes)524,255,04077,382,720
Size500.0 MB 73.8 MB
Events in quadrant A8,149,950312,860
Events in quadrant B4,270,564548,533
Events in quadrant C2,503,402582,628
Events in quadrant D4,053,904513,880

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279662
B0165362
C0111312
D0160182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5501278750.663516%
B550160811.052536%
C550160.109071%
D55014037.325941%

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 6994 5501 2146 2146 30.68% 39.01%
B 6993 5500 520 520 7.44% 9.45%
C 6993 5501 0 0 0.00% 0.00%
D 6993 5500 409 409 5.85% 7.44%

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 15 237 6294066 86401.04 347 339 72.8
A 10 83 439185 6024.53 347 339 72.8
A 15 222 40516 551.55 347 339 72.8
B 4 81 2024180 18714.42 559 543 108.1
B 15 32 16840 150.71 559 543 108.1
B 4 171 14498 129.05 559 543 108.1
C 15 214 239802 1767.07 572 574 135.4
C 14 254 23348 168.22 572 574 135.4
C 12 249 8102 55.61 572 574 135.4
D 2 249 799455 5895.23 555 538 135.5
D 1 52 717637 5291.49 555 538 135.5
D 10 118 165284 1215.67 555 538 135.5

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