ASTROSAT CZTI

Data Quality Report

Orbit 37628

Creation date: 2024-06-27T21:42:24.220324
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_075T01_9000005342_37628cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37628cztM0_level2_quad_clean.evt
Size (bytes)529,770,24075,781,440
Size505.2 MB 72.3 MB
Events in quadrant A3,849,355466,546
Events in quadrant B3,342,768475,981
Events in quadrant C2,942,211488,193
Events in quadrant D5,505,352447,256

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153453
B0137952
C0124132
D0205102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5963530.888814%
B59631462.448432%
C5963110.184471%
D596384614.187490%

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 7276 5964 34 34 0.47% 0.57%
B 7275 5962 101 101 1.39% 1.69%
C 7275 5962 9 9 0.12% 0.15%
D 7275 5962 819 819 11.26% 13.74%

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 15 222 816286 5984.96 670 656 136.3
A 10 83 333708 2443.88 670 656 136.3
A 9 143 63010 457.54 670 656 136.3
B 5 172 302874 2341.0 664 644 129.1
B 5 255 158208 1220.45 664 644 129.1
B 0 189 124359 958.26 664 644 129.1
C 15 214 273397 1775.7 658 661 153.6
C 0 10 67300 433.87 658 661 153.6
C 12 250 29614 188.5 658 661 153.6
D 12 227 2120671 14302.09 608 592 148.2
D 2 249 498280 3357.41 608 592 148.2
D 12 233 198015 1331.82 608 592 148.2

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