ASTROSAT CZTI

Data Quality Report

Orbit 41475

Creation date: 2024-06-27T22:29:31.013558
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_014T01_9000005674_41475cztM0_level2.fits modeM0/AS1A12_014T01_9000005674_41475cztM0_level2_quad_clean.evt
Size (bytes)308,845,44084,530,880
Size294.5 MB 80.6 MB
Events in quadrant A2,607,065569,681
Events in quadrant B2,281,588594,996
Events in quadrant C3,205,337540,039
Events in quadrant D2,955,159509,892

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107503
B0102582
C0126312
D0123082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4915130.264496%
B4915110.223805%
C49152986.063072%
D49151222.482197%

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 7038 4916 6 6 0.09% 0.12%
B 7038 4916 1 1 0.01% 0.02%
C 7038 4916 281 281 3.99% 5.72%
D 7038 4916 100 100 1.42% 2.03%

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 499213 4587.55 534 523 108.7
A 13 248 27752 250.48 534 523 108.7
A 13 6 9052 78.46 534 523 108.7
B 0 245 62813 608.81 540 526 102.3
B 5 255 29158 279.86 540 526 102.3
B 0 190 14365 135.27 540 526 102.3
C 0 10 736371 6282.3 505 509 117.1
C 4 254 285455 2432.68 505 509 117.1
C 15 214 196431 1672.65 505 509 117.1
D 12 16 200040 1595.49 516 503 125.1
D 13 249 194789 1553.5 516 503 125.1
D 1 52 162414 1294.63 516 503 125.1

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