ASTROSAT CZTI

Data Quality Report

Orbit 53039

Creation date: 2025-07-19T11:20:30.672567
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_9000006488_53039cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53039cztM0_level2_quad_clean.evt
Size (bytes)1,185,071,04073,615,680
Size1.1 GB 70.2 MB
Events in quadrant A16,968,18765,376
Events in quadrant B4,741,569707,113
Events in quadrant C10,967,002509,878
Events in quadrant D10,631,954436,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552940
B0193350
C0375470
D0364940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72317231100.000000%
B72324696.485066%
C7230268237.095436%
D7232310542.934181%

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 7230 7230 6886 6886 95.24% 95.24%
B 7232 7232 416 416 5.75% 5.75%
C 7232 7230 2738 2738 37.86% 37.87%
D 7232 7232 2810 2810 38.86% 38.86%

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 9 191 15754572 629439.29 90 87 25.0
A 7 206 503101 20096.93 90 87 25.0
A 12 80 245907 9821.25 90 87 25.0
B 10 44 1071456 7004.81 725 701 152.9
B 7 0 336761 2198.48 725 701 152.9
B 4 81 135132 879.44 725 701 152.9
C 1 241 5705149 35098.39 587 584 162.5
C 7 80 1093993 6727.4 587 584 162.5
C 15 224 925075 5688.1 587 584 162.5
D 12 17 3933336 25259.57 535 510 155.7
D 8 176 3585747 23027.1 535 510 155.7
D 2 249 159738 1022.68 535 510 155.7

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