ASTROSAT CZTI

Data Quality Report

Orbit 39107

Creation date: 2024-06-27T22:00:30.343427
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_067T01_9000005432_39107cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39107cztM0_level2_quad_clean.evt
Size (bytes)837,066,240174,473,280
Size798.3 MB 166.4 MB
Events in quadrant A10,220,7901,176,699
Events in quadrant B4,946,9651,214,761
Events in quadrant C8,105,0321,100,598
Events in quadrant D6,877,3281,041,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379744
B0219803
C0310193
D0278913

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108131301.202257%
B10813110.101729%
C108134794.429853%
D108132172.006844%

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 13618 10815 51 51 0.37% 0.47%
B 13618 10815 2 2 0.01% 0.02%
C 13618 10815 401 401 2.94% 3.71%
D 13618 10815 186 186 1.37% 1.72%

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 15 223 4554081 18827.46 1202 1174 241.8
A 10 83 745826 3079.33 1202 1174 241.8
A 13 248 117856 482.51 1202 1174 241.8
B 0 230 95726 409.04 1201 1169 231.2
B 5 184 80489 343.13 1201 1169 231.2
B 12 111 30056 124.96 1201 1169 231.2
C 15 208 2858740 10563.38 1161 1168 270.5
C 15 214 448899 1655.09 1161 1168 270.5
C 9 187 226402 832.61 1161 1168 270.5
D 12 235 1002446 3461.11 1169 1135 289.3
D 2 249 282063 971.05 1169 1135 289.3
D 5 222 170486 585.38 1169 1135 289.3

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