ASTROSAT CZTI

Data Quality Report

Orbit 53218

Creation date: 2025-08-01T12:46:26.545312
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_9000006490_53218cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53218cztM0_level2_quad_clean.evt
Size (bytes)902,517,12086,379,840
Size860.7 MB 82.4 MB
Events in quadrant A4,773,160647,886
Events in quadrant B4,128,820688,880
Events in quadrant C12,135,974350,550
Events in quadrant D11,818,689430,439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01919624
B01727824
C041082122
D040270227

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71404065.686275%
B71433414.773905%
C7133345048.366746%
D7122244634.344285%

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 8548 7149 308 308 3.60% 4.31%
B 8548 7149 252 252 2.95% 3.52%
C 8548 7152 3070 3070 35.91% 42.93%
D 8548 7144 2415 2415 28.25% 33.80%

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 62 813102 4384.7 748 730 185.3
A 7 206 345748 1862.2 748 730 185.3
A 14 254 194049 1043.42 748 730 185.3
B 12 17 606861 3976.81 721 697 152.4
B 10 28 150992 986.03 721 697 152.4
B 10 247 95862 624.34 721 697 152.4
C 1 241 3171296 20442.63 565 558 155.1
C 15 165 3068000 19776.65 565 558 155.1
C 15 198 1502149 9681.17 565 558 155.1
D 15 125 7800822 41483.84 648 617 188.0
D 11 176 534230 2837.91 648 617 188.0
D 10 172 187955 996.32 648 617 188.0

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