ASTROSAT CZTI

Data Quality Report

Orbit 19726

Creation date: 2024-06-27T18:06:03.832133
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/AS1A05_013T01_9000002944_19726cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19726cztM0_level2_quad_clean.evt
Size (bytes)473,420,16093,905,280
Size451.5 MB 89.6 MB
Events in quadrant A3,079,108621,422
Events in quadrant B3,438,996631,471
Events in quadrant C3,607,319581,046
Events in quadrant D3,776,940562,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133822
B0144226
C0149742
D0157352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6409180.280855%
B6408530.827091%
C6408671.045568%
D64081963.058677%

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 7599 6410 0 0 0.00% 0.00%
B 7598 6409 24 24 0.32% 0.37%
C 7598 6409 1 1 0.01% 0.02%
D 7598 6409 145 145 1.91% 2.26%

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 0 226 6856 37.65 799 784 161.3
A 3 137 6344 34.48 799 784 161.3
A 12 194 5753 30.81 799 784 161.3
B 7 220 105442 683.12 801 783 153.2
B 0 189 71449 461.25 801 783 153.2
B 4 171 44065 282.51 801 783 153.2
C 3 233 510442 2899.46 754 760 175.8
C 14 238 118394 669.19 754 760 175.8
C 7 247 34789 193.58 754 760 175.8
D 1 52 420431 2282.49 754 733 183.9
D 12 218 376772 2045.06 754 733 183.9
D 2 16 41780 223.23 754 733 183.9

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