ASTROSAT CZTI

Data Quality Report

Orbit 52560

Creation date: 2025-06-16T15:46:18.944837
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_011T06_9000006478_52560cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52560cztM0_level2_quad_clean.evt
Size (bytes)1,020,070,08077,863,680
Size972.8 MB 74.3 MB
Events in quadrant A3,143,462668,834
Events in quadrant B9,339,238611,231
Events in quadrant C7,421,339549,342
Events in quadrant D17,303,92830,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146910
B0326960
C0270260
D0561926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7132190.266405%
B7132135819.040942%
C7133112315.743726%
D7132683095.765564%

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 7132 7132 11 11 0.15% 0.15%
B 7132 7132 768 768 10.77% 10.77%
C 7133 7133 962 962 13.49% 13.49%
D 7131 7131 6333 6333 88.81% 88.81%

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 3 44 37938 199.3 737 716 186.8
A 4 205 34655 181.72 737 716 186.8
A 3 14 31767 166.26 737 716 186.8
B 10 254 4441596 30195.67 692 668 147.1
B 10 44 910250 6184.62 692 668 147.1
B 4 170 401672 2726.59 692 668 147.1
C 15 248 1046874 5732.46 660 656 182.5
C 2 12 993606 5440.6 660 656 182.5
C 13 3 989715 5419.28 660 656 182.5
D 6 42 13761412 207921.14 224 213 66.2
D 2 62 1504128 22722.99 224 213 66.2
D 15 125 381356 5758.77 224 213 66.2

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