ASTROSAT CZTI

Data Quality Report

Orbit 25932

Creation date: 2024-06-27T19:22:58.024013
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/AS1T03_214T01_9000003758_25932cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25932cztM0_level2_quad_clean.evt
Size (bytes)348,238,08071,101,440
Size332.1 MB 67.8 MB
Events in quadrant A2,496,565451,721
Events in quadrant B2,442,970456,501
Events in quadrant C2,487,836438,157
Events in quadrant D2,754,729432,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107840
B0105940
C0107900
D0118990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104
B093
C0104
D0104

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519790.173177%
B5209170.326358%
C5231300.573504%
D5218220.421617%

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 6805 5362 0 0 0.00% 0.00%
B 6696 5360 1 1 0.01% 0.02%
C 6578 5380 0 0 0.00% 0.00%
D 6683 5365 8 8 0.12% 0.15%

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 0 13 116665 921.35 616 602 126.0
A 13 254 8118 59.66 616 602 126.0
A 3 137 5834 41.53 616 602 126.0
B 12 111 14457 117.78 615 599 117.7
B 0 190 13184 106.96 615 599 117.7
B 11 111 12913 104.66 615 599 117.7
C 14 238 95972 684.89 591 592 139.3
C 3 233 83864 597.95 591 592 139.3
C 13 61 4053 24.85 591 592 139.3
D 1 52 438001 3079.3 596 583 142.1
D 2 234 22558 154.7 596 583 142.1
D 2 120 17462 118.82 596 583 142.1

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