ASTROSAT CZTI

Data Quality Report

Orbit 50783

Creation date: 2025-02-16T22:34:08.980149
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/AS1C07_001T01_9000006450_50783cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50783cztM0_level2_quad_clean.evt
Size (bytes)567,596,16081,178,560
Size541.3 MB 77.4 MB
Events in quadrant A3,441,664558,848
Events in quadrant B3,239,080617,172
Events in quadrant C5,511,769503,372
Events in quadrant D8,372,401376,830

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140811
B0135591
C0203462
D0287951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57481903.305498%
B57481061.844120%
C574862710.908142%
D5748174830.410578%

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 6928 5749 100 100 1.44% 1.74%
B 6928 5749 26 26 0.38% 0.45%
C 6928 5749 497 497 7.17% 8.64%
D 6928 5749 1706 1706 24.62% 29.67%

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 8 248 171602 1115.85 618 603 153.2
A 3 114 78999 511.57 618 603 153.2
A 4 3 75011 485.55 618 603 153.2
B 4 170 420939 3209.38 618 597 131.0
B 8 128 60804 459.69 618 597 131.0
B 5 185 51814 391.05 618 597 131.0
C 1 44 1393790 8632.24 589 584 161.4
C 5 10 648494 4014.42 589 584 161.4
C 4 5 267110 1651.38 589 584 161.4
D 8 176 3406233 22389.56 541 520 152.1
D 2 216 777315 5106.74 541 520 152.1
D 2 249 446857 2934.27 541 520 152.1

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