ASTROSAT CZTI

Data Quality Report

Orbit 39442

Creation date: 2024-06-27T22:04:37.277938
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_9000005474_39442cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39442cztM0_level2_quad_clean.evt
Size (bytes)410,304,96091,483,200
Size391.3 MB 87.2 MB
Events in quadrant A3,667,777624,339
Events in quadrant B3,219,961633,965
Events in quadrant C3,389,478607,352
Events in quadrant D4,480,746517,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145803
B0133282
C0136672
D0172782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5534961.734731%
B55341472.656306%
C5534951.716661%
D553458410.552945%

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 7208 5535 61 61 0.85% 1.10%
B 7208 5535 81 81 1.12% 1.46%
C 7208 5535 88 88 1.22% 1.59%
D 7208 5535 482 482 6.69% 8.71%

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 588869 4629.6 615 602 127.1
A 10 83 457764 3597.81 615 602 127.1
A 9 143 220699 1732.14 615 602 127.1
B 5 255 540531 4509.76 612 596 119.7
B 5 172 245651 2046.8 612 596 119.7
B 0 186 14707 117.86 612 596 119.7
C 15 208 498937 3515.63 603 607 141.7
C 15 214 231685 1630.21 603 607 141.7
C 9 187 160381 1127.18 603 607 141.7
D 12 0 1097671 7896.55 575 559 138.9
D 13 249 392716 2822.58 575 559 138.9
D 12 227 271030 1946.73 575 559 138.9

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