ASTROSAT CZTI

Data Quality Report

Orbit 38635

Creation date: 2024-06-27T21:54:25.599915
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_061T03_9000005390_38635cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38635cztM0_level2_quad_clean.evt
Size (bytes)351,469,440101,753,280
Size335.2 MB 97.0 MB
Events in quadrant A3,025,142691,240
Events in quadrant B3,135,413712,401
Events in quadrant C2,888,745686,477
Events in quadrant D3,545,248617,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121783
B0126582
C0115492
D0140632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5344120.224551%
B5344821.534431%
C534480.149701%
D53441192.226796%

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 7378 5345 6 6 0.08% 0.11%
B 7378 5345 22 22 0.30% 0.41%
C 7378 5345 3 3 0.04% 0.06%
D 7378 5345 101 101 1.37% 1.89%

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 418485 3225.78 649 638 129.5
A 0 247 37676 285.93 649 638 129.5
A 13 248 19676 146.97 649 638 129.5
B 4 251 403628 3310.7 648 631 121.7
B 0 183 41717 337.53 648 631 121.7
B 4 171 38980 315.04 648 631 121.7
C 15 214 217675 1456.99 645 652 149.0
C 14 254 94616 630.83 645 652 149.0
C 0 10 16450 106.06 645 652 149.0
D 15 0 239730 1530.35 637 620 156.2
D 1 47 221021 1410.61 637 620 156.2
D 5 222 115148 733.0 637 620 156.2

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