ASTROSAT CZTI

Data Quality Report

Orbit 42734

Creation date: 2024-06-27T22:43:36.670972
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/AS1A05_013T01_9000005822_42734cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42734cztM0_level2_quad_clean.evt
Size (bytes)319,152,96087,779,520
Size304.4 MB 83.7 MB
Events in quadrant A2,840,555603,258
Events in quadrant B2,313,495622,431
Events in quadrant C3,638,738558,979
Events in quadrant D2,636,877527,654

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112752
B0100342
C0137552
D0111872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931220.446157%
B493090.182556%
C49302685.436105%
D4930841.703854%

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 6933 4932 18 18 0.26% 0.36%
B 6932 4931 2 2 0.03% 0.04%
C 6932 4931 260 260 3.75% 5.27%
D 6932 4931 77 77 1.11% 1.56%

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 515800 4360.38 574 562 118.2
A 13 248 98261 826.81 574 562 118.2
A 13 254 7052 54.92 574 562 118.2
B 4 80 17707 157.23 572 558 109.1
B 12 111 13412 117.85 572 558 109.1
B 5 255 13063 114.65 572 558 109.1
C 0 239 934962 7393.6 545 549 126.4
C 8 79 337547 2666.51 545 549 126.4
C 15 214 201347 1588.82 545 549 126.4
D 1 47 200610 1500.76 550 535 133.3
D 2 249 154294 1153.35 550 535 133.3
D 5 70 47717 353.91 550 535 133.3

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