ASTROSAT CZTI

Data Quality Report

Orbit 39299

Creation date: 2024-06-27T22:02:53.814373
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_042T01_9000005462_39299cztM0_level2.fits modeM0/AS1A12_042T01_9000005462_39299cztM0_level2_quad_clean.evt
Size (bytes)648,120,96080,593,920
Size618.1 MB 76.9 MB
Events in quadrant A3,956,663629,296
Events in quadrant B3,028,890647,171
Events in quadrant C3,231,165625,832
Events in quadrant D13,341,676148,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153102
B0129181
C0132081
D0434951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55722865.132807%
B55722073.715004%
C5572581.040919%
D5572439378.840632%

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 7364 5573 246 246 3.34% 4.41%
B 7364 5573 118 118 1.60% 2.12%
C 7364 5573 63 63 0.86% 1.13%
D 7364 5572 4111 4111 55.83% 73.78%

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 13 248 1204459 9850.04 600 588 122.2
A 10 83 431433 3525.16 600 588 122.2
A 3 137 6416 47.68 600 588 122.2
B 5 172 504006 4397.44 600 583 114.5
B 5 255 88382 766.93 600 583 114.5
B 5 184 53370 461.1 600 583 114.5
C 14 254 534883 3923.43 590 592 136.2
C 15 214 232589 1703.61 590 592 136.2
C 3 233 140528 1027.58 590 592 136.2
D 12 235 11499499 136192.85 344 335 84.4
D 5 222 189408 2239.33 344 335 84.4
D 12 227 111620 1318.03 344 335 84.4

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