ASTROSAT CZTI

Data Quality Report

Orbit 11512

Creation date: 2024-06-27T16:14:03.322153
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/AS1A04_021T06_9000001688_11512cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11512cztM0_level2_quad_clean.evt
Size (bytes)717,330,240115,718,400
Size684.1 MB 110.4 MB
Events in quadrant A7,217,454696,157
Events in quadrant B5,175,622735,675
Events in quadrant C3,829,779784,090
Events in quadrant D4,952,949724,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270863
B0208442
C0170942
D0204952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A811699412.247413%
B81163934.842287%
C8116680.837851%
D81163083.794973%

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 8552 8121 467 467 5.46% 5.75%
B 8552 8121 138 138 1.61% 1.70%
C 8552 8121 0 0 0.00% 0.00%
D 8552 8121 191 191 2.23% 2.35%

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 8 5 2951327 15627.43 929 912 188.8
A 15 223 169917 895.17 929 912 188.8
A 14 238 120982 635.97 929 912 188.8
B 4 239 754846 4060.19 968 941 185.7
B 11 51 231986 1244.3 968 941 185.7
B 3 64 185858 995.88 968 941 185.7
C 0 207 46458 199.63 965 972 227.9
C 8 128 9616 37.94 965 972 227.9
C 13 61 7133 27.04 965 972 227.9
D 1 52 491230 2146.72 947 921 228.4
D 10 253 278216 1214.08 947 921 228.4
D 2 120 221818 967.15 947 921 228.4

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