ASTROSAT CZTI

Data Quality Report

Orbit 55247

Creation date: 2025-12-14T13:21:30.112471
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_55247cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55247cztM0_level2_quad_clean.evt
Size (bytes)572,042,880112,740,480
Size545.5 MB 107.5 MB
Events in quadrant A4,162,685734,085
Events in quadrant B4,127,988772,015
Events in quadrant C6,397,645685,186
Events in quadrant D5,855,407656,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183382
B0185752
C0246348
D0226452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81351571.929932%
B81353314.068838%
C81346267.696090%
D81344165.114335%

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 8430 8138 84 84 1.00% 1.03%
B 8430 8138 141 141 1.67% 1.73%
C 8429 8137 489 489 5.80% 6.01%
D 8429 8137 342 342 4.06% 4.20%

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 0 8 413203 1967.53 865 842 209.6
A 12 115 246338 1171.36 865 842 209.6
A 4 205 51684 242.59 865 842 209.6
B 10 245 391043 2130.37 855 822 183.2
B 2 249 132504 718.9 855 822 183.2
B 5 185 89486 484.05 855 822 183.2
C 12 254 1330391 5878.82 828 820 226.2
C 9 38 544391 2403.45 828 820 226.2
C 13 3 359992 1588.11 828 820 226.2
D 5 38 995960 4280.27 832 797 232.5
D 12 6 636007 2732.08 832 797 232.5
D 2 31 549761 2361.13 832 797 232.5

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