ASTROSAT CZTI

Data Quality Report

Orbit 37026

Creation date: 2024-06-27T21:34:27.286943
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/AS1T05_046T01_9000005266_37026cztM0_level2.evt modeM0/AS1T05_046T01_9000005266_37026cztM0_level2_quad_clean.evt
Size (bytes)489,709,44080,208,000
Size467.0 MB 76.5 MB
Events in quadrant A2,818,945544,107
Events in quadrant B4,288,705505,830
Events in quadrant C3,637,377496,109
Events in quadrant D3,717,823502,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117703
B0164322
C0141662
D0147252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5427110.202690%
B54274929.065782%
C54273005.527916%
D5428911.676492%

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 7280 5428 0 0 0.00% 0.00%
B 7280 5428 383 383 5.26% 7.06%
C 7280 5428 257 257 3.53% 4.73%
D 7281 5429 87 87 1.19% 1.60%

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 233735 1742.32 662 650 133.8
A 13 6 20892 151.31 662 650 133.8
A 9 143 7177 48.79 662 650 133.8
B 5 184 1536365 12935.02 622 606 118.7
B 5 172 179865 1509.82 622 606 118.7
B 15 85 31903 263.6 622 606 118.7
C 1 23 716411 5086.76 608 613 140.7
C 15 214 228243 1617.63 608 613 140.7
C 0 10 192006 1360.12 608 613 140.7
D 12 235 429634 2772.99 633 617 154.7
D 2 153 342820 2211.86 633 617 154.7
D 2 250 248279 1600.79 633 617 154.7

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