ASTROSAT CZTI

Data Quality Report

Orbit 53461

Creation date: 2025-10-15T22:22:47.001999
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_002T06_9000006496_53461cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53461cztM0_level2_quad_clean.evt
Size (bytes)1,021,858,56094,616,640
Size974.5 MB 90.2 MB
Events in quadrant A6,464,170707,450
Events in quadrant B4,629,168846,352
Events in quadrant C19,858,357109,693
Events in quadrant D6,252,515643,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249650
B0193540
C0641160
D0244450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A802587210.866044%
B8026961.196113%
C8026702687.540493%
D80266698.335410%

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 8025 8025 728 728 9.07% 9.07%
B 8026 8026 49 49 0.61% 0.61%
C 8026 8026 6503 6503 81.02% 81.02%
D 8026 8026 539 539 6.72% 6.72%

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 15 174 2287609 11016.51 835 814 207.6
A 3 63 648365 3119.54 835 814 207.6
A 3 62 119009 569.4 835 814 207.6
B 10 28 316983 1691.98 869 836 186.9
B 4 171 282181 1505.72 869 836 186.9
B 2 249 155653 828.56 869 836 186.9
C 1 241 12651251 130455.13 350 346 97.0
C 7 64 2995809 30888.98 350 346 97.0
C 15 224 1335454 13767.53 350 346 97.0
D 8 176 2022310 8719.06 819 784 231.9
D 3 12 277161 1192.04 819 784 231.9
D 3 13 156879 673.25 819 784 231.9

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