ASTROSAT CZTI

Data Quality Report

Orbit 30909

Creation date: 2024-06-27T20:21:03.731389
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/AS1C06_006T02_9000004468_30909cztM0_level2.evt modeM0/AS1C06_006T02_9000004468_30909cztM0_level2_quad_clean.evt
Size (bytes)164,531,52012,464,640
Size156.9 MB 11.9 MB
Events in quadrant A1,008,98959,525
Events in quadrant B1,575,08061,981
Events in quadrant C1,070,30556,458
Events in quadrant D1,192,95456,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042290
B060791
C044220
D046960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195222511.526639%
B195130015.376730%
C195131015.889288%
D19511779.072271%

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 1952 1952 0 0 0.00% 0.00%
B 1951 1951 4 4 0.21% 0.21%
C 1951 1951 2 2 0.10% 0.10%
D 1951 1951 5 5 0.26% 0.26%

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 13 254 3539 59.89 261 254 54.9
A 3 137 2949 49.13 261 254 54.9
A 0 226 2225 35.93 261 254 54.9
B 6 159 529058 10224.21 251 243 51.7
B 0 190 24857 475.89 251 243 51.7
B 15 201 24048 460.25 251 243 51.7
C 14 238 69339 1194.61 241 240 57.8
C 14 254 42395 728.79 241 240 57.8
C 0 10 10548 178.21 241 240 57.8
D 8 195 188769 3076.2 252 244 61.3
D 2 250 35758 579.49 252 244 61.3
D 2 234 9076 144.11 252 244 61.3

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