ASTROSAT CZTI

Data Quality Report

Orbit 41422

Creation date: 2024-06-27T22:28:50.163883
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_41422cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41422cztM0_level2_quad_clean.evt
Size (bytes)450,498,24094,685,760
Size429.6 MB 90.3 MB
Events in quadrant A3,183,642637,022
Events in quadrant B2,925,248655,690
Events in quadrant C3,183,812617,039
Events in quadrant D6,922,584543,118

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128583
B0128452
C0131962
D0247552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932130.219150%
B5932160.269724%
C59321402.360081%
D593259610.047202%

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 7246 5933 6 6 0.08% 0.10%
B 7246 5933 1 1 0.01% 0.02%
C 7246 5933 136 136 1.88% 2.29%
D 7246 5933 574 574 7.92% 9.67%

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 565830 4178.65 656 641 135.3
A 13 248 56589 413.64 656 641 135.3
A 2 79 18360 131.0 656 641 135.3
B 0 186 248557 1946.19 651 633 127.4
B 0 190 71113 553.26 651 633 127.4
B 5 255 18119 137.26 651 633 127.4
C 0 10 430732 2874.97 634 637 149.6
C 15 214 263556 1757.48 634 637 149.6
C 15 111 10695 67.23 634 637 149.6
D 1 52 3185056 20575.22 626 607 154.8
D 2 249 722793 4666.16 626 607 154.8
D 5 222 175236 1128.3 626 607 154.8

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