ASTROSAT CZTI

Data Quality Report

Orbit 51663

Creation date: 2025-04-22T12:00:58.605187
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/AS1A13_031T01_9000006462_51663cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51663cztM0_level2_quad_clean.evt
Size (bytes)1,628,838,720281,286,720
Size1.5 GB 268.3 MB
Events in quadrant A14,875,9791,778,688
Events in quadrant B12,843,7942,008,351
Events in quadrant C16,177,4831,724,033
Events in quadrant D14,841,4151,617,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0584562
B0523512
C0622892
D0586302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2013816238.059390%
B201397483.714186%
C2013916378.128507%
D2013915257.572372%

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 20988 20140 1205 1205 5.74% 5.98%
B 20989 20140 316 316 1.51% 1.57%
C 20989 20141 1397 1397 6.66% 6.94%
D 20989 20141 1302 1302 6.20% 6.46%

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 7 64 4753704 9196.67 2104 2054 516.7
A 12 250 445860 858.97 2104 2054 516.7
A 13 248 359189 691.22 2104 2054 516.7
B 1 207 763537 1673.95 2136 2060 454.9
B 1 223 637869 1397.7 2136 2060 454.9
B 4 170 449286 983.14 2136 2060 454.9
C 15 189 1519286 2635.63 2083 2066 575.7
C 12 254 1286906 2231.95 2083 2066 575.7
C 14 245 1224993 2124.4 2083 2066 575.7
D 7 60 2808585 4834.28 2062 1991 580.6
D 2 249 1189932 2046.19 2062 1991 580.6
D 6 42 427634 733.16 2062 1991 580.6

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