ASTROSAT CZTI

Data Quality Report

Orbit 54691

Creation date: 2025-11-11T14:27:59.245554
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_066T07_9000006522_54691cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54691cztM0_level2_quad_clean.evt
Size (bytes)450,501,12086,544,000
Size429.6 MB 82.5 MB
Events in quadrant A3,183,196585,598
Events in quadrant B3,111,925621,491
Events in quadrant C3,074,526562,034
Events in quadrant D6,852,059443,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135781
B0134361
C0132391
D0244971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58431292.207770%
B58431592.721205%
C5843891.523190%
D5842113019.342691%

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 7023 5844 57 57 0.81% 0.98%
B 7023 5844 62 62 0.88% 1.06%
C 7023 5844 43 43 0.61% 0.74%
D 7022 5843 1101 1101 15.68% 18.84%

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 14 170633 1050.36 653 639 161.8
A 11 3 170439 1049.16 653 639 161.8
A 0 8 102491 629.33 653 639 161.8
B 2 249 234497 1686.53 646 623 138.7
B 7 0 115982 831.89 646 623 138.7
B 1 207 93914 672.75 646 623 138.7
C 6 223 185416 1055.54 639 632 175.1
C 14 254 161632 919.68 639 632 175.1
C 1 16 75818 429.48 639 632 175.1
D 11 129 2138986 12802.74 581 555 167.0
D 11 176 909139 5439.67 581 555 167.0
D 2 172 873019 5223.42 581 555 167.0

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