ASTROSAT CZTI

Data Quality Report

Orbit 40758

Creation date: 2024-06-27T22:20:04.785688
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/AS1A12_068T02_9000005564_40758cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40758cztM0_level2_quad_clean.evt
Size (bytes)235,287,36051,048,000
Size224.4 MB 48.7 MB
Events in quadrant A1,691,282361,032
Events in quadrant B1,519,311369,738
Events in quadrant C3,484,953308,456
Events in quadrant D1,752,547270,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070691
B068231
C0125231
D075131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A333160.180126%
B333180.240168%
C333149714.920444%
D333163619.093365%

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 4615 3332 2 2 0.04% 0.06%
B 4615 3332 3 3 0.07% 0.09%
C 4615 3332 523 523 11.33% 15.70%
D 4615 3332 64 64 1.39% 1.92%

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 268671 3518.82 365 359 76.3
A 12 189 6728 83.53 365 359 76.3
A 6 10 4359 52.46 365 359 76.3
B 0 229 32057 441.14 362 352 71.9
B 4 81 19894 271.9 362 352 71.9
B 5 252 14939 202.96 362 352 71.9
C 9 187 1990952 24787.74 340 342 80.3
C 15 214 136987 1701.55 340 342 80.3
C 14 254 12747 154.47 340 342 80.3
D 2 249 264632 3281.04 324 315 80.6
D 12 191 142790 1768.58 324 315 80.6
D 2 250 56579 698.42 324 315 80.6

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