ASTROSAT CZTI

Data Quality Report

Orbit 50358

Creation date: 2025-01-20T08:14:40.328231
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/AS1C09_003T01_9000006442_50358cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50358cztM0_level2_quad_clean.evt
Size (bytes)873,866,88081,584,640
Size833.4 MB 77.8 MB
Events in quadrant A5,308,140584,281
Events in quadrant B9,194,748557,973
Events in quadrant C8,861,506447,082
Events in quadrant D8,473,894419,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206331
B0319831
C0309311
D0296972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66053375.102195%
B6606146722.207084%
C6606189328.655767%
D6605182327.600303%

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 7500 6606 241 241 3.21% 3.65%
B 7501 6607 958 958 12.77% 14.50%
C 7501 6607 1447 1447 19.29% 21.90%
D 7500 6606 1642 1642 21.89% 24.86%

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 4 3 1047107 6138.86 686 669 170.5
A 7 206 491407 2878.88 686 669 170.5
A 7 221 209957 1227.77 686 669 170.5
B 4 170 4378779 30970.52 655 632 141.4
B 10 44 1371563 9697.81 655 632 141.4
B 10 43 348080 2457.81 655 632 141.4
C 15 230 3285429 19441.77 599 593 169.0
C 15 232 907288 5366.4 599 593 169.0
C 5 65 427090 2524.28 599 593 169.0
D 7 61 2987333 17624.83 604 585 169.5
D 2 14 573718 3382.06 604 585 169.5
D 3 12 545023 3212.73 604 585 169.5

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