ASTROSAT CZTI

Data Quality Report

Orbit 18750

Creation date: 2024-06-27T17:54:21.585210
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_9000002804_18750cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18750cztM0_level2_quad_clean.evt
Size (bytes)498,925,440104,417,280
Size475.8 MB 99.6 MB
Events in quadrant A3,435,324666,885
Events in quadrant B3,697,902675,694
Events in quadrant C3,630,214658,239
Events in quadrant D3,840,157642,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153722
B0160562
C0158102
D0167852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7459320.429012%
B74591301.742861%
C74581041.394476%
D7458961.287208%

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 7880 7460 0 0 0.00% 0.00%
B 7880 7460 42 42 0.53% 0.56%
C 7879 7459 9 9 0.11% 0.12%
D 7879 7459 25 25 0.32% 0.34%

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 13 254 11025 56.53 887 867 179.7
A 15 192 9938 50.48 887 867 179.7
A 0 226 7586 37.39 887 867 179.7
B 15 201 169604 984.83 882 859 171.3
B 0 230 24419 137.5 882 859 171.3
B 12 111 20942 117.21 882 859 171.3
C 14 238 133132 652.87 858 862 202.6
C 3 233 131060 642.65 858 862 202.6
C 0 239 17663 82.93 858 862 202.6
D 13 168 453608 2159.88 862 837 209.6
D 7 38 43455 203.3 862 837 209.6
D 7 238 43423 203.15 862 837 209.6

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