ASTROSAT CZTI

Data Quality Report

Orbit 52147

Creation date: 2025-05-19T20:04:35.276387
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_011T07_9000006470_52147cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52147cztM0_level2_quad_clean.evt
Size (bytes)713,494,08077,633,280
Size680.4 MB 74.0 MB
Events in quadrant A4,920,200549,387
Events in quadrant B3,757,690619,743
Events in quadrant C5,666,613505,803
Events in quadrant D11,593,937249,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188441
B0153731
C0211601
D0386331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609766010.824996%
B60982584.230895%
C609883713.725812%
D6098346556.821909%

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 7172 6097 526 526 7.33% 8.63%
B 7173 6098 155 155 2.16% 2.54%
C 7173 6098 721 721 10.05% 11.82%
D 7172 6097 3392 3392 47.30% 55.63%

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 95 1484602 9387.7 637 621 158.1
A 14 254 519925 3285.13 637 621 158.1
A 5 240 92145 578.98 637 621 158.1
B 5 185 431425 3213.96 636 613 134.0
B 0 171 104997 778.73 636 613 134.0
B 0 172 96362 714.31 636 613 134.0
C 15 224 2380959 14516.99 597 593 164.0
C 13 3 245759 1495.18 597 593 164.0
C 4 5 133490 810.49 597 593 164.0
D 6 42 8842780 68248.61 450 428 129.6
D 3 12 387050 2984.09 450 428 129.6
D 13 170 114320 879.06 450 428 129.6

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