ASTROSAT CZTI

Data Quality Report

Orbit 36976

Creation date: 2024-06-27T21:33:49.175004
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_079T01_9000005254_36976cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36976cztM0_level2_quad_clean.evt
Size (bytes)614,787,84073,667,520
Size586.3 MB 70.3 MB
Events in quadrant A3,209,090447,148
Events in quadrant B6,281,107443,696
Events in quadrant C4,015,421448,653
Events in quadrant D4,661,443425,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136923
B0232972
C0160972
D0184162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6679100.149723%
B66793785.659530%
C6679520.778560%
D66793585.360084%

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 9365 6681 1 1 0.01% 0.01%
B 9365 6681 208 208 2.22% 3.11%
C 9365 6681 39 39 0.42% 0.58%
D 9365 6681 351 351 3.75% 5.25%

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 251490 1623.12 759 743 154.5
A 9 143 13844 84.8 759 743 154.5
A 13 254 8704 51.53 759 743 154.5
B 5 184 2777830 19316.79 744 725 143.8
B 4 81 199506 1382.66 744 725 143.8
B 0 221 121336 838.93 744 725 143.8
C 0 10 449274 2550.17 746 752 175.9
C 15 214 283477 1607.49 746 752 175.9
C 0 207 199424 1129.59 746 752 175.9
D 12 17 1045557 5782.02 733 713 180.7
D 10 253 318393 1758.0 733 713 180.7
D 2 250 235814 1301.02 733 713 180.7

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