ASTROSAT CZTI

Data Quality Report

Orbit 37515

Creation date: 2024-06-27T21:40:58.715583
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/AS1A09_061T01_9000005330_37515cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37515cztM0_level2_quad_clean.evt
Size (bytes)172,054,08019,670,400
Size164.1 MB 18.8 MB
Events in quadrant A1,157,615117,941
Events in quadrant B1,088,441118,172
Events in quadrant C1,127,859113,284
Events in quadrant D1,708,026109,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046162
B044181
C044231
D063361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1858291.560818%
B1858271.453175%
C1858573.067815%
D185821311.463940%

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 3411 1859 16 16 0.47% 0.86%
B 3411 1859 12 12 0.35% 0.65%
C 3411 1859 48 48 1.41% 2.58%
D 3410 1858 179 179 5.25% 9.63%

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 134808 2846.59 223 218 47.3
A 10 83 128093 2704.57 223 218 47.3
A 12 189 21282 445.51 223 218 47.3
B 5 172 73411 1628.1 221 215 45.0
B 15 35 56751 1257.53 221 215 45.0
B 0 213 49119 1087.77 221 215 45.0
C 14 254 150148 2891.32 213 214 51.9
C 15 214 81372 1565.05 213 214 51.9
C 0 10 51078 980.86 213 214 51.9
D 2 249 356707 6696.48 207 201 53.2
D 13 249 333691 6264.15 207 201 53.2
D 12 227 95932 1798.18 207 201 53.2

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