ASTROSAT CZTI

Data Quality Report

Orbit 34723

Creation date: 2022-03-02T17:33:09.380430
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/AS1C07_001T01_9000004982_34723cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34723cztM0_level2_quad_clean.evt
Size (bytes)391,193,280100,454,400
Size373.1 MB 95.8 MB
Events in quadrant A2,489,213668,153
Events in quadrant B2,749,184681,577
Events in quadrant C2,762,287680,571
Events in quadrant D3,486,869641,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109943
B0116312
C0114922
D0141002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528980.151257%
B5289510.964265%
C5289741.399130%
D5289801.512573%

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 7052 5290 1 1 0.01% 0.02%
B 7052 5290 25 25 0.35% 0.47%
C 7052 5290 42 42 0.60% 0.79%
D 7052 5290 61 61 0.87% 1.15%

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 49460 402.87 603 591 121.3
A 10 83 47057 383.06 603 591 121.3
A 7 48 31155 251.97 603 591 121.3
B 0 182 98084 852.25 603 589 114.4
B 5 172 76383 662.55 603 589 114.4
B 4 171 63618 550.97 603 589 114.4
C 15 214 225658 1643.16 592 596 137.0
C 0 10 191780 1395.82 592 596 137.0
C 14 67 13982 97.73 592 596 137.0
D 8 195 614577 3938.77 580 568 155.9
D 1 20 171897 1099.05 580 568 155.9
D 2 250 126782 809.64 580 568 155.9

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