ASTROSAT CZTI

Data Quality Report

Orbit 37450

Creation date: 2024-06-27T21:40:08.024990
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/AS1A09_002T01_9000005322_37450cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37450cztM0_level2_quad_clean.evt
Size (bytes)478,696,32091,560,960
Size456.5 MB 87.3 MB
Events in quadrant A3,162,143616,264
Events in quadrant B4,110,965584,949
Events in quadrant C3,336,029625,493
Events in quadrant D3,540,504586,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123573
B0154672
C0127972
D0138292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5126781.521654%
B512657711.256340%
C51262134.155287%
D51262254.389387%

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 7220 5127 57 57 0.79% 1.11%
B 7220 5127 505 505 6.99% 9.85%
C 7220 5126 192 192 2.66% 3.75%
D 7220 5126 196 196 2.71% 3.82%

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 13 248 377344 3104.15 613 603 121.4
A 10 83 276730 2275.14 613 603 121.4
A 15 222 77120 630.46 613 603 121.4
B 15 35 1524475 14122.12 574 561 107.9
B 4 171 186115 1719.53 574 561 107.9
B 5 172 34942 318.61 574 561 107.9
C 14 254 503047 3712.66 595 600 135.3
C 0 10 266170 1962.34 595 600 135.3
C 15 214 232575 1714.1 595 600 135.3
D 13 249 549433 3819.41 598 584 143.7
D 2 249 247374 1717.4 598 584 143.7
D 12 233 97740 676.1 598 584 143.7

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