ASTROSAT CZTI

Data Quality Report

Orbit 40536

Creation date: 2024-06-27T22:17:14.930261
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/AS1T05_070T01_9000005544_40536cztM0_level2.fits modeM0/AS1T05_070T01_9000005544_40536cztM0_level2_quad_clean.evt
Size (bytes)1,590,575,040419,523,840
Size1.5 GB 400.1 MB
Events in quadrant A13,904,0152,943,199
Events in quadrant B12,113,8633,025,095
Events in quadrant C13,523,6082,847,591
Events in quadrant D17,377,8082,148,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0558025
B0522675
C0556415
D0686275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25260750.296912%
B252601090.431512%
C252602310.914489%
D25260545621.599367%

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 35455 25265 24 24 0.07% 0.09%
B 35455 25265 57 57 0.16% 0.23%
C 35455 25265 210 210 0.59% 0.83%
D 35455 25265 1214 1214 3.42% 4.81%

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 2097038 3636.89 2850 2795 575.8
A 12 189 302879 521.13 2850 2795 575.8
A 3 1 240568 412.92 2850 2795 575.8
B 3 112 422730 779.95 2828 2751 538.5
B 15 85 229350 420.82 2828 2751 538.5
B 0 230 202267 370.52 2828 2751 538.5
C 15 214 1098868 1708.47 2756 2776 641.6
C 14 254 1065232 1656.04 2756 2776 641.6
C 10 20 521294 808.21 2756 2776 641.6
D 2 250 3055231 5048.81 2461 2395 604.7
D 12 227 2522900 4168.44 2461 2395 604.7
D 12 191 979515 1615.97 2461 2395 604.7

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