ASTROSAT CZTI

Data Quality Report

Orbit 42051

Creation date: 2024-06-27T22:36:11.893230
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_037T03_9000005738_42051cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42051cztM0_level2_quad_clean.evt
Size (bytes)378,892,80085,754,880
Size361.3 MB 81.8 MB
Events in quadrant A4,937,230564,297
Events in quadrant B2,421,985598,740
Events in quadrant C2,433,469567,751
Events in quadrant D3,820,574494,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184323
B0109362
C0106462
D0151182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52981853.491884%
B5298170.320876%
C529830.056625%
D52983857.266893%

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 7061 5299 185 185 2.62% 3.49%
B 7061 5299 10 10 0.14% 0.19%
C 7061 5299 0 0 0.00% 0.00%
D 7061 5299 313 313 4.43% 5.91%

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 15 223 2085840 17554.83 572 559 118.8
A 10 83 551387 4637.12 572 559 118.8
A 12 189 48452 403.18 572 559 118.8
B 5 255 87353 765.95 578 561 113.3
B 3 112 21596 185.64 578 561 113.3
B 0 186 16247 138.43 578 561 113.3
C 15 214 218404 1625.56 566 569 134.0
C 12 249 5024 33.24 566 569 134.0
C 13 61 3731 23.6 566 569 134.0
D 1 52 1129005 8308.85 544 527 135.8
D 13 249 357386 2627.51 544 527 135.8
D 12 6 139661 1024.43 544 527 135.8

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