ASTROSAT CZTI

Data Quality Report

Orbit 33279

Creation date: 2024-06-27T20:46:59.678915
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/AS1T04_072T01_9000004780_33279cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33279cztM0_level2_quad_clean.evt
Size (bytes)920,908,800167,117,760
Size878.2 MB 159.4 MB
Events in quadrant A5,396,7791,159,906
Events in quadrant B6,874,6481,123,179
Events in quadrant C6,470,1611,094,742
Events in quadrant D8,526,9801,044,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211513
B0264562
C0248922
D0319182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92171121.215146%
B92175405.858739%
C92173063.319952%
D92173423.710535%

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 13402 9219 67 67 0.50% 0.73%
B 13402 9219 427 427 3.19% 4.63%
C 13402 9218 274 274 2.04% 2.97%
D 13402 9219 318 318 2.37% 3.45%

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 15 169 511792 2103.29 1248 1232 242.7
A 13 6 29126 114.91 1248 1232 242.7
A 12 16 22054 85.78 1248 1232 242.7
B 5 172 1585693 7149.99 1206 1181 221.6
B 0 219 261599 1175.12 1206 1181 221.6
B 5 200 96158 428.58 1206 1181 221.6
C 1 23 912784 3479.8 1163 1175 262.0
C 15 214 393388 1497.16 1163 1175 262.0
C 0 10 221478 840.94 1163 1175 262.0
D 8 195 2014926 6464.48 1180 1160 311.5
D 12 218 702577 2251.65 1180 1160 311.5
D 2 249 425911 1363.51 1180 1160 311.5

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