ASTROSAT CZTI

Data Quality Report

Orbit 42558

Creation date: 2024-06-27T22:41:36.032815
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/AS1C07_001T10_9000005814_42558cztM0_level2.fits modeM0/AS1C07_001T10_9000005814_42558cztM0_level2_quad_clean.evt
Size (bytes)295,836,48092,105,280
Size282.1 MB 87.8 MB
Events in quadrant A2,896,421611,303
Events in quadrant B2,387,304622,199
Events in quadrant C2,531,107604,541
Events in quadrant D2,698,476558,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121192
B0113772
C0113092
D0123893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A561070.124777%
B561050.089127%
C561050.089127%
D5609520.927081%

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 7344 5611 3 3 0.04% 0.05%
B 7344 5611 2 2 0.03% 0.04%
C 7344 5611 0 0 0.00% 0.00%
D 7343 5610 45 45 0.61% 0.80%

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 571693 4637.35 594 582 123.2
A 2 79 12388 95.86 594 582 123.2
A 13 254 8718 66.06 594 582 123.2
B 0 229 24099 206.4 590 574 114.0
B 5 255 21960 187.63 590 574 114.0
B 12 111 14396 121.27 590 574 114.0
C 15 214 236554 1724.85 582 584 136.8
C 14 254 18027 127.5 582 584 136.8
C 15 111 7443 50.14 582 584 136.8
D 12 6 94656 668.4 578 562 140.8
D 1 52 85535 603.61 578 562 140.8
D 13 249 81085 572.0 578 562 140.8

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