ASTROSAT CZTI

Data Quality Report

Orbit 41875

Creation date: 2024-06-27T22:33:55.391232
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/AS1T05_124T01_9000005712_41875cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41875cztM0_level2_quad_clean.evt
Size (bytes)364,380,48087,716,160
Size347.5 MB 83.7 MB
Events in quadrant A4,104,007578,592
Events in quadrant B2,414,330617,135
Events in quadrant C3,176,234550,419
Events in quadrant D3,363,207523,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157912
B0112372
C0129732
D0140173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55233185.757740%
B552390.162955%
C55232654.798117%
D55222023.658095%

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 7136 5524 231 231 3.24% 4.18%
B 7136 5524 0 0 0.00% 0.00%
C 7136 5524 249 249 3.49% 4.51%
D 7135 5523 194 194 2.72% 3.51%

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 14 24 1316175 10989.0 579 567 119.7
A 10 83 526417 4392.31 579 567 119.7
A 2 79 11235 89.11 579 567 119.7
B 0 156 42527 359.66 591 574 116.6
B 0 190 22040 184.03 591 574 116.6
B 12 111 14675 120.89 591 574 116.6
C 0 10 762071 5797.98 559 562 131.3
C 15 214 216945 1647.5 559 562 131.3
C 15 111 9891 71.03 559 562 131.3
D 13 249 541575 3856.46 569 553 140.3
D 2 249 362122 2577.3 569 553 140.3
D 13 112 77109 545.7 569 553 140.3

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