ASTROSAT CZTI

Data Quality Report

Orbit 31134

Creation date: 2024-06-27T20:23:44.070861
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_071T64_9000004496_31134cztM0_level2.evt modeM0/AS1A10_071T64_9000004496_31134cztM0_level2_quad_clean.evt
Size (bytes)313,464,96050,025,600
Size298.9 MB 47.7 MB
Events in quadrant A1,830,743333,176
Events in quadrant B2,866,823327,477
Events in quadrant C1,951,422310,108
Events in quadrant D2,617,490307,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075602
B0107091
C079311
D0102891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3331672.011408%
B33311424.262984%
C33311384.142900%
D3331661.981387%

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 4531 3332 0 0 0.00% 0.00%
B 4531 3332 15 15 0.33% 0.45%
C 4531 3332 15 15 0.33% 0.45%
D 4531 3332 12 12 0.26% 0.36%

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 13 254 7276 72.06 473 466 94.5
A 3 137 4333 40.92 473 466 94.5
A 0 226 4118 38.64 473 466 94.5
B 6 159 881900 9868.49 461 451 89.3
B 0 190 77476 862.35 461 451 89.3
B 5 172 40244 445.51 461 451 89.3
C 0 10 120634 1152.47 443 446 104.3
C 14 238 72323 689.22 443 446 104.3
C 4 175 9911 90.76 443 446 104.3
D 8 195 740197 6782.09 456 445 109.1
D 12 218 46426 421.56 456 445 109.1
D 2 250 35424 320.69 456 445 109.1

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