ASTROSAT CZTI

Data Quality Report

Orbit 39380

Creation date: 2024-06-27T22:03:54.139491
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_018T01_9000005470_39380cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39380cztM0_level2_quad_clean.evt
Size (bytes)612,564,48088,107,840
Size584.2 MB 84.0 MB
Events in quadrant A3,084,605664,639
Events in quadrant B4,015,346667,730
Events in quadrant C2,957,146636,866
Events in quadrant D12,149,327277,028

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127123
B0159762
C0124892
D0402352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6032120.198939%
B60322083.448276%
C6032140.232095%
D6032363660.278515%

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 7315 6033 6 6 0.08% 0.10%
B 7315 6033 98 98 1.34% 1.62%
C 7315 6033 10 10 0.14% 0.17%
D 7315 6033 2969 2969 40.59% 49.21%

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 479079 3487.52 665 651 137.2
A 2 79 24582 174.45 665 651 137.2
A 13 254 7968 53.34 665 651 137.2
B 5 200 585636 4587.67 654 635 127.5
B 5 172 530233 4153.19 654 635 127.5
B 6 203 305583 2391.45 654 635 127.5
C 15 214 255351 1692.02 643 647 150.5
C 14 254 102565 677.05 643 647 150.5
C 9 187 55286 362.97 643 647 150.5
D 12 235 9775548 82573.11 480 465 118.4
D 13 249 250884 2115.37 480 465 118.4
D 2 249 93703 787.61 480 465 118.4

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