ASTROSAT CZTI

Data Quality Report

Orbit 42772

Creation date: 2024-06-27T22:44:03.035176
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/AS1A05_013T01_9000005822_42772cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42772cztM0_level2_quad_clean.evt
Size (bytes)621,201,600178,571,520
Size592.4 MB 170.3 MB
Events in quadrant A6,363,5101,179,684
Events in quadrant B4,940,5571,185,941
Events in quadrant C5,376,8651,193,317
Events in quadrant D5,476,6831,101,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252043
B0222133
C0227613
D0240303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107872222.058033%
B10788440.407861%
C10788360.333704%
D107881491.381164%

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 13565 10789 170 170 1.25% 1.58%
B 13565 10790 29 29 0.21% 0.27%
C 13565 10790 29 29 0.21% 0.27%
D 13565 10790 132 132 0.97% 1.22%

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 1111783 4563.43 1191 1167 243.4
A 13 248 548072 2247.19 1191 1167 243.4
A 12 189 44052 176.21 1191 1167 243.4
B 15 35 74198 316.2 1179 1145 231.0
B 0 230 67608 287.67 1179 1145 231.0
B 15 85 66447 282.65 1179 1145 231.0
C 15 214 446262 1635.35 1168 1179 272.2
C 14 254 223268 816.01 1168 1179 272.2
C 10 34 67473 243.58 1168 1179 272.2
D 2 249 297717 1031.83 1168 1135 287.4
D 5 171 144845 499.98 1168 1135 287.4
D 10 118 124931 430.7 1168 1135 287.4

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