ASTROSAT CZTI

Data Quality Report

Orbit 00297

Creation date: 2024-06-27T13:58:53.412502
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_126T04_9000000036_00297cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00297cztM0_level2_quad_clean.evt
Size (bytes)683,683,20032,503,680
Size652.0 MB 31.0 MB
Events in quadrant A5,112,899173,174
Events in quadrant B5,203,702177,187
Events in quadrant C5,515,757173,950
Events in quadrant D4,600,397170,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181022
B0183761
C0193041
D0166081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A409860.146413%
B4098340.829673%
C4098411.000488%
D409850.122011%

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 5833 4099 117 117 2.01% 2.85%
B 5833 4099 134 134 2.30% 3.27%
C 5833 4099 202 202 3.46% 4.93%
D 5833 4099 45 45 0.77% 1.10%

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 0 6 33364 108.34 1305 1288 296.1
A 13 17 11160 33.34 1305 1288 296.1
A 5 243 10618 31.51 1305 1288 296.1
B 5 46 183327 590.97 1295 1302 308.0
B 0 183 40248 126.44 1295 1302 308.0
B 0 182 12206 35.4 1295 1302 308.0
C 1 1 694093 2095.13 1166 1203 330.7
C 2 192 214006 643.46 1166 1203 330.7
C 7 223 25402 73.17 1166 1203 330.7
D 13 216 88757 243.67 1137 1180 359.4
D 1 5 74182 203.12 1137 1180 359.4
D 7 85 22123 58.27 1137 1180 359.4

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