ASTROSAT CZTI

Data Quality Report

Orbit 28550

Creation date: 2024-06-27T19:53:14.708944
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/AS1A10_102T07_9000004102_28550cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28550cztM0_level2_quad_clean.evt
Size (bytes)573,664,32097,606,080
Size547.1 MB 93.1 MB
Events in quadrant A3,876,330623,817
Events in quadrant B4,478,751621,202
Events in quadrant C3,717,518593,461
Events in quadrant D4,776,091579,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165732
B0182882
C0160072
D0193003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7731530.685552%
B77322633.401449%
C77321131.461459%
D77312743.544173%

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 8366 7732 0 0 0.00% 0.00%
B 8367 7733 112 112 1.34% 1.45%
C 8367 7734 0 0 0.00% 0.00%
D 8366 7733 169 169 2.02% 2.19%

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 217427 1128.6 942 921 191.8
A 13 254 14133 68.87 942 921 191.8
A 8 192 11287 54.04 942 921 191.8
B 4 171 793485 4375.47 931 907 181.1
B 12 111 22768 120.68 931 907 181.1
B 11 111 20371 107.45 931 907 181.1
C 14 238 144436 673.9 901 905 213.0
C 7 247 33495 153.02 901 905 213.0
C 7 220 19935 89.35 901 905 213.0
D 1 52 841082 3881.53 898 872 216.5
D 8 195 376309 1734.41 898 872 216.5
D 2 250 82051 375.02 898 872 216.5

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