ASTROSAT CZTI

Data Quality Report

Orbit 36347

Creation date: 2024-06-27T21:25:34.986251
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/AS1A10_103T02_9000005192_36347cztM0_level2.evt modeM0/AS1A10_103T02_9000005192_36347cztM0_level2_quad_clean.evt
Size (bytes)444,214,080109,468,800
Size423.6 MB 104.4 MB
Events in quadrant A2,769,281763,334
Events in quadrant B3,572,789759,734
Events in quadrant C3,225,667727,253
Events in quadrant D3,527,866696,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115223
B0141292
C0128152
D0140162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5270160.303605%
B52701633.092979%
C52701402.656546%
D52702304.364326%

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 7303 5271 3 3 0.04% 0.06%
B 7303 5271 97 97 1.33% 1.84%
C 7303 5271 129 129 1.77% 2.45%
D 7303 5271 230 230 3.15% 4.36%

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 193575 1499.66 647 637 128.7
A 9 143 38807 296.69 647 637 128.7
A 7 3 23083 174.47 647 637 128.7
B 5 172 385975 3230.63 636 621 119.3
B 5 236 329895 2760.48 636 621 119.3
B 0 213 96814 806.44 636 621 119.3
C 0 10 356254 2543.24 607 612 139.8
C 0 207 247869 1768.17 607 612 139.8
C 15 214 224486 1600.95 607 612 139.8
D 2 249 522466 3605.03 606 591 144.8
D 13 171 233955 1612.04 606 591 144.8
D 12 6 93823 644.03 606 591 144.8

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