ASTROSAT CZTI

Data Quality Report

Orbit 41434

Creation date: 2024-06-27T22:28:57.815688
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_035T01_9000005666_41434cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41434cztM0_level2_quad_clean.evt
Size (bytes)318,153,60086,258,880
Size303.4 MB 82.3 MB
Events in quadrant A2,843,339576,796
Events in quadrant B2,385,702594,172
Events in quadrant C3,005,509548,998
Events in quadrant D3,134,529525,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116223
B0107112
C0121732
D0130052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5233180.343971%
B5233120.229314%
C52332334.452513%
D5233801.528760%

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 7115 5234 7 7 0.10% 0.13%
B 7115 5234 3 3 0.04% 0.06%
C 7115 5234 217 217 3.05% 4.15%
D 7115 5234 66 66 0.93% 1.26%

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 509173 4300.08 577 564 118.3
A 2 79 57977 485.4 577 564 118.3
A 13 248 31714 263.36 577 564 118.3
B 0 190 100765 896.88 573 558 111.7
B 12 111 14417 124.04 573 558 111.7
B 0 186 14181 121.93 573 558 111.7
C 0 10 629147 4841.76 551 553 129.8
C 15 214 216113 1660.35 551 553 129.8
C 15 111 12659 93.25 551 553 129.8
D 12 233 229512 1645.12 566 551 139.2
D 13 171 209395 1500.57 566 551 139.2
D 12 79 194097 1390.66 566 551 139.2

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