ASTROSAT CZTI

Data Quality Report

Orbit 41275

Creation date: 2024-06-27T22:26:53.161113
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_052T04_9000005638_41275cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41275cztM0_level2_quad_clean.evt
Size (bytes)295,032,96087,779,520
Size281.4 MB 83.7 MB
Events in quadrant A2,749,505583,637
Events in quadrant B2,425,381591,887
Events in quadrant C2,600,786573,669
Events in quadrant D2,730,748536,441

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111982
B0108871
C0111671
D0117451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531950.094003%
B531990.169205%
C5319530.996428%
D5319300.564016%

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 7052 5320 0 0 0.00% 0.00%
B 7052 5320 3 3 0.04% 0.06%
C 7052 5320 50 50 0.71% 0.94%
D 7052 5320 31 31 0.44% 0.58%

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 471768 3957.29 578 564 119.1
A 12 189 25514 209.53 578 564 119.1
A 13 6 16178 131.13 578 564 119.1
B 0 245 77486 686.68 572 555 112.0
B 7 202 55071 486.61 572 555 112.0
B 0 186 14710 126.35 572 555 112.0
C 15 214 226459 1720.93 562 565 131.3
C 0 10 159455 1210.48 562 565 131.3
C 15 159 13180 96.11 562 565 131.3
D 1 52 157975 1117.33 569 552 140.9
D 5 222 84573 596.35 569 552 140.9
D 13 249 77788 548.19 569 552 140.9

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