ASTROSAT CZTI

Data Quality Report

Orbit 30638

Creation date: 2024-06-27T20:18:01.588862
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/AS1A10_103T02_9000004416_30638cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30638cztM0_level2_quad_clean.evt
Size (bytes)1,179,296,640124,099,200
Size1.1 GB 118.4 MB
Events in quadrant A4,928,540811,583
Events in quadrant B7,565,523816,635
Events in quadrant C5,044,504785,022
Events in quadrant D17,504,951652,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209301
B0300671
C0209112
D0589541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9992410.410328%
B99921161.160929%
C99911321.321189%
D9991394539.485537%

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 11577 9994 7 7 0.06% 0.07%
B 11577 9994 2 2 0.02% 0.02%
C 11576 9993 15 15 0.13% 0.15%
D 11576 9993 3850 3850 33.26% 38.53%

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 13 192485 788.61 1218 1193 242.6
A 8 192 19894 77.1 1218 1193 242.6
A 0 31 17186 65.93 1218 1193 242.6
B 6 159 2730728 11773.43 1208 1177 231.8
B 0 229 50288 211.83 1208 1177 231.8
B 12 111 28916 119.65 1208 1177 231.8
C 14 238 190502 682.35 1181 1188 277.4
C 10 22 152313 544.71 1181 1188 277.4
C 3 233 65739 232.66 1181 1188 277.4
D 10 253 6428684 27866.15 978 952 230.7
D 8 195 6209635 26916.51 978 952 230.7
D 1 52 618346 2676.59 978 952 230.7

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