ASTROSAT CZTI

Data Quality Report

Orbit 54118

Creation date: 2025-09-30T11:51:18.238835
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_012T01_9000006512_54118cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54118cztM0_level2_quad_clean.evt
Size (bytes)1,283,731,200269,400,960
Size1.2 GB 256.9 MB
Events in quadrant A10,194,7491,762,258
Events in quadrant B11,110,0241,887,697
Events in quadrant C11,696,4341,638,200
Events in quadrant D13,006,6761,523,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451563
B0472973
C0495093
D0531443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195234472.289607%
B195245832.986068%
C195249895.065560%
D1952410355.301168%

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 20713 19525 261 261 1.26% 1.34%
B 20714 19527 169 169 0.82% 0.87%
C 20714 19527 811 811 3.92% 4.15%
D 20714 19526 882 882 4.26% 4.52%

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 610977 1226.62 2028 1980 496.5
A 0 8 433078 868.3 2028 1980 496.5
A 3 130 401816 805.33 2028 1980 496.5
B 5 236 576423 1343.11 2016 1942 427.7
B 15 20 552909 1288.13 2016 1942 427.7
B 4 81 343451 798.43 2016 1942 427.7
C 1 241 2233540 4170.37 1949 1930 535.1
C 13 3 949196 1770.23 1949 1930 535.1
C 15 233 196612 363.82 1949 1930 535.1
D 8 176 2150007 3915.46 1927 1847 548.6
D 2 165 1533354 2791.48 1927 1847 548.6
D 2 120 563451 1023.64 1927 1847 548.6

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