ASTROSAT CZTI

Data Quality Report

Orbit 00845

Creation date: 2024-06-27T14:03:43.685873
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/AS1P01_165T02_9000000116_00845cztM0_level2.evt modeM0/AS1P01_165T02_9000000116_00845cztM0_level2_quad_clean.evt
Size (bytes)1,159,479,36080,959,680
Size1.1 GB 77.2 MB
Events in quadrant A8,667,432493,259
Events in quadrant B9,643,721487,437
Events in quadrant C8,343,959483,748
Events in quadrant D7,974,834477,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309390
B0338300
C0299680
D0289990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A731860.081990%
B7318951.298169%
C731820.027330%
D7319400.546523%

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 7318 7318 234 234 3.20% 3.20%
B 7318 7318 660 660 9.02% 9.02%
C 7318 7318 213 213 2.91% 2.91%
D 7319 7319 155 155 2.12% 2.12%

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 14 170 130978 241.02 2208 2226 534.2
A 15 171 57118 102.76 2208 2226 534.2
A 15 127 8036 10.88 2208 2226 534.2
B 8 38 549461 1005.76 2318 2330 544.0
B 0 187 123711 223.13 2318 2330 544.0
B 0 220 72185 128.41 2318 2330 544.0
C 3 111 41088 66.32 2092 2164 586.9
C 3 79 30362 48.05 2092 2164 586.9
C 5 234 26428 41.34 2092 2164 586.9
D 1 4 138191 229.68 2031 2080 592.6
D 7 207 110259 182.55 2031 2080 592.6
D 13 169 41110 65.86 2031 2080 592.6

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