ASTROSAT CZTI

Data Quality Report

Orbit 44279

Creation date: 2024-06-27T23:01:17.510043
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/AS1A13_077T01_9000005984_44279cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44279cztM0_level2_quad_clean.evt
Size (bytes)1,377,904,320297,054,720
Size1.3 GB 283.3 MB
Events in quadrant A15,096,8331,995,512
Events in quadrant B9,410,7562,060,186
Events in quadrant C11,392,1071,960,081
Events in quadrant D13,635,9471,667,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0598783
B0410093
C0470983
D0540683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190197133.748883%
B190203351.761304%
C190203351.761304%
D1902015027.896951%

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 19834 19022 318 318 1.60% 1.67%
B 19835 19023 40 40 0.20% 0.21%
C 19835 19023 129 129 0.65% 0.68%
D 19835 19023 1101 1101 5.55% 5.79%

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 10 83 3927532 8831.11 2150 2106 444.5
A 15 223 2503989 5628.54 2150 2106 444.5
A 13 248 193193 429.89 2150 2106 444.5
B 0 190 275670 644.96 2153 2082 424.2
B 0 219 223631 522.28 2153 2082 424.2
B 0 200 110944 256.63 2153 2082 424.2
C 3 233 2226241 4476.36 2101 2108 496.9
C 14 254 667516 1339.22 2101 2108 496.9
C 15 208 186545 371.2 2101 2108 496.9
D 1 52 1586319 2983.14 2053 1985 531.1
D 1 20 1106969 2080.57 2053 1985 531.1
D 2 249 970831 1824.24 2053 1985 531.1

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