ASTROSAT CZTI

Data Quality Report

Orbit 20220213_A05_156T01_9000004928_level2

Creation date: 2026-01-01T01:59:52.203053
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/AS1A05_156T01_9000004928cztM0_level2.fits modeM0/AS1A05_156T01_9000004928cztM0_level2_quad_clean.evt
Size (bytes)771,768,000764,988,480
Size736.0 MB 729.5 MB
Events in quadrant A4,877,6444,732,685
Events in quadrant B4,463,3384,636,268
Events in quadrant C4,729,1644,542,910
Events in quadrant D3,921,5283,877,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016020
B016020
C016020
D016020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01647650
B02067040
C01703200
D02702480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A784512030.258760%
B7845444305.646621%
C784553670.467784%
D7845563108.042827%

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 110880 78456 0 0 0.00% 0.00%
B 110880 78423 0 0 0.00% 0.00%
C 110880 78449 0 0 0.00% 0.00%
D 110880 78337 0 0 0.00% 0.00%

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 9 19 3987 9.02 1272 1201 308.8
A 0 29 3946 8.89 1272 1201 308.8
A 7 110 3869 8.64 1272 1201 308.8
B 2 9 3997 12.53 1185 1138 228.2
B 3 80 3555 10.59 1185 1138 228.2
B 2 8 3234 9.18 1185 1138 228.2
C 1 80 3809 8.33 1251 1181 315.6
C 1 81 3802 8.31 1251 1181 315.6
C 3 203 3701 7.99 1251 1181 315.6
D 7 3 2950 6.44 1127 1034 297.5
D 4 160 2854 6.12 1127 1034 297.5
D 10 189 2828 6.03 1127 1034 297.5

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