ASTROSAT CZTI

Data Quality Report

Orbit 34614

Creation date: 2022-02-21T21:52:56.027366
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/AS1A11_046T09_9000004952_34614cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34614cztM0_level2_quad_clean.evt
Size (bytes)455,163,84076,942,080
Size434.1 MB 73.4 MB
Events in quadrant A2,624,162498,887
Events in quadrant B3,221,059490,189
Events in quadrant C2,914,554494,819
Events in quadrant D4,653,436462,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113523
B0129812
C0117412
D0174022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5471130.237617%
B54712194.002925%
C5471581.060135%
D54712524.606105%

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 7053 5472 7 7 0.10% 0.13%
B 7053 5472 151 151 2.14% 2.76%
C 7053 5472 33 33 0.47% 0.60%
D 7053 5472 221 221 3.13% 4.04%

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 62651 477.65 643 630 129.8
A 10 83 45950 349.03 643 630 129.8
A 13 6 14958 110.35 643 630 129.8
B 5 172 663556 5469.1 632 618 121.2
B 12 111 14852 117.43 632 618 121.2
B 5 200 14837 117.3 632 618 121.2
C 15 214 228550 1569.54 622 625 145.2
C 0 10 154773 1061.5 622 625 145.2
C 14 67 64155 437.48 622 625 145.2
D 8 195 1161322 7667.54 616 600 151.4
D 3 13 607800 4011.07 616 600 151.4
D 13 249 129569 851.95 616 600 151.4

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