ASTROSAT CZTI

Data Quality Report

Orbit 10836

Creation date: 2024-06-27T16:04:21.194838
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/AS1A03_086T01_9000001568_10836cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10836cztM0_level2_quad_clean.evt
Size (bytes)1,795,619,520293,402,880
Size1.7 GB 279.8 MB
Events in quadrant A16,827,1681,818,191
Events in quadrant B13,515,7841,861,513
Events in quadrant C10,192,3831,877,546
Events in quadrant D12,326,1781,778,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650825
B0546564
C0459274
D0520384

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2252714596.476672%
B225277233.209482%
C22527890.395081%
D225274812.135216%

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 25452 22531 963 963 3.78% 4.27%
B 25452 22531 341 341 1.34% 1.51%
C 25452 22531 6 6 0.02% 0.03%
D 25452 22531 300 300 1.18% 1.33%

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 8 5 4853779 9018.88 2640 2591 537.9
A 8 15 1651664 3065.8 2640 2591 537.9
A 0 254 54284 96.1 2640 2591 537.9
B 4 239 2515496 4973.67 2671 2615 505.2
B 0 214 226898 443.92 2671 2615 505.2
B 0 85 102575 197.85 2671 2615 505.2
C 13 61 19321 27.65 2605 2630 603.7
C 15 127 16800 23.47 2605 2630 603.7
C 14 67 15496 21.31 2605 2630 603.7
D 12 233 920544 1473.29 2581 2515 623.1
D 1 52 436556 696.56 2581 2515 623.1
D 9 85 212851 337.55 2581 2515 623.1

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