ASTROSAT CZTI

Data Quality Report

Orbit 55319

Creation date: 2025-12-20T12:30:12.756389
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/AS1A14_009T01_9000006534_55319cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55319cztM0_level2_quad_clean.evt
Size (bytes)560,658,240108,299,520
Size534.7 MB 103.3 MB
Events in quadrant A5,910,861680,488
Events in quadrant B4,036,286746,950
Events in quadrant C4,451,656657,458
Events in quadrant D5,699,693607,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234402
B0185662
C0197042
D0229872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84394124.882095%
B84401972.334123%
C84401802.132701%
D84403454.087678%

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 9398 8713 311 311 3.31% 3.57%
B 9399 8714 49 49 0.52% 0.56%
C 9399 8716 136 136 1.45% 1.56%
D 9399 8714 332 332 3.53% 3.81%

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 78 1160344 5303.87 893 869 218.6
A 0 8 521240 2380.37 893 869 218.6
A 3 14 375763 1714.9 893 869 218.6
B 2 249 163295 853.23 897 863 190.4
B 0 199 133204 695.16 897 863 190.4
B 7 252 103542 539.36 897 863 190.4
C 6 223 328974 1353.47 887 879 242.4
C 13 3 291777 1200.03 887 879 242.4
C 12 241 99884 408.42 887 879 242.4
D 8 160 1022698 4142.45 877 841 246.7
D 11 129 531400 2150.81 877 841 246.7
D 3 12 122365 492.64 877 841 246.7

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