ASTROSAT CZTI

Data Quality Report

Orbit 06151

Creation date: 2024-06-27T15:03:23.953860
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/AS1C02_018T01_9000000798_06151cztM0_level2.evt modeM0/AS1C02_018T01_9000000798_06151cztM0_level2_quad_clean.evt
Size (bytes)1,636,937,280297,449,280
Size1.5 GB 283.7 MB
Events in quadrant A12,019,9061,836,828
Events in quadrant B14,657,1751,808,578
Events in quadrant C10,480,5271,919,438
Events in quadrant D10,840,8981,839,386

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0514064
B0586284
C0475564
D0490394

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233234722.023753%
B2332313545.805428%
C233232641.131930%
D233233661.569266%

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 25848 23325 85 85 0.33% 0.36%
B 25848 23323 690 690 2.67% 2.96%
C 25848 23326 0 0 0.00% 0.00%
D 25848 23324 56 56 0.22% 0.24%

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 15 1331994 2391.62 2718 2656 555.8
A 4 2 84907 147.98 2718 2656 555.8
A 0 50 83477 145.4 2718 2656 555.8
B 3 64 3185264 6199.25 2685 2624 513.4
B 0 219 543917 1054.35 2685 2624 513.4
B 0 214 209623 403.2 2685 2624 513.4
C 9 16 30125 44.44 2663 2677 617.6
C 8 128 25438 36.85 2663 2677 617.6
C 13 61 21080 29.8 2663 2677 617.6
D 13 169 412801 629.65 2661 2576 651.5
D 5 97 157190 237.31 2661 2576 651.5
D 8 195 98646 147.46 2661 2576 651.5

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