ASTROSAT CZTI

Data Quality Report

Orbit 12822

Creation date: 2024-06-27T16:32:45.635043
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/AS1G08_071T01_9000001888_12822cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12822cztM0_level2_quad_clean.evt
Size (bytes)487,673,28072,000,000
Size465.1 MB 68.7 MB
Events in quadrant A3,606,496439,363
Events in quadrant B4,062,510442,190
Events in quadrant C3,056,801439,231
Events in quadrant D3,617,052420,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147202
B0159961
C0130211
D0147521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281741.178156%
B62812503.980258%
C6281490.780131%
D62811712.722496%

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 7497 6283 0 0 0.00% 0.00%
B 7497 6283 138 138 1.84% 2.20%
C 7497 6283 0 0 0.00% 0.00%
D 7497 6283 118 118 1.57% 1.88%

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 15 222 358761 2172.0 818 802 164.8
A 12 189 101330 609.98 818 802 164.8
A 0 226 7464 40.42 818 802 164.8
B 4 239 657787 4378.84 803 786 150.0
B 0 219 128724 852.69 803 786 150.0
B 3 64 85124 562.1 803 786 150.0
C 13 61 5557 26.7 783 787 178.6
C 3 202 1996 6.77 783 787 178.6
C 14 234 1950 6.51 783 787 178.6
D 1 52 384010 2002.24 782 765 191.4
D 8 195 144961 753.34 782 765 191.4
D 13 172 61144 315.45 782 765 191.4

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