ASTROSAT CZTI

Data Quality Report

Orbit 52965

Creation date: 2025-07-17T10:50:32.093518
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/AS1A13_003T01_9000006486_52965cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52965cztM0_level2_quad_clean.evt
Size (bytes)983,142,72072,339,840
Size937.6 MB 69.0 MB
Events in quadrant A16,680,101121
Events in quadrant B8,208,594566,371
Events in quadrant C4,843,630590,555
Events in quadrant D6,132,043557,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540372
B0290762
C0191732
D0232303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6826682599.985350%
B6826168924.743627%
C68264516.607091%
D68255608.205128%

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 7320 6825 6653 6653 90.89% 97.48%
B 7321 6826 1259 1259 17.20% 18.44%
C 7321 6826 295 295 4.03% 4.32%
D 7320 6826 428 428 5.85% 6.27%

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 15877595 417407.8 143 139 38.0
A 8 249 98149 2576.62 143 139 38.0
A 0 8 35369 926.17 143 139 38.0
B 12 17 2516534 17174.19 687 662 146.5
B 10 254 2044509 13951.99 687 662 146.5
B 5 185 348850 2376.85 687 662 146.5
C 15 147 398316 2023.16 715 707 196.5
C 12 254 376626 1912.79 715 707 196.5
C 13 3 309886 1573.2 715 707 196.5
D 2 62 879424 4319.54 714 681 203.4
D 7 222 522632 2565.7 714 681 203.4
D 15 78 482170 2366.8 714 681 203.4

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