ASTROSAT CZTI

Data Quality Report

Orbit 10852

Creation date: 2024-06-27T16:04:31.387542
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_10852cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10852cztM0_level2_quad_clean.evt
Size (bytes)2,784,962,880348,445,440
Size2.6 GB 332.3 MB
Events in quadrant A24,539,8242,148,718
Events in quadrant B18,006,0712,257,116
Events in quadrant C13,421,7132,284,581
Events in quadrant D26,508,1511,952,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05640
B05640
C05640
D05640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0915566
B0716015
C0589155
D0978495

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27763323811.663005%
B2776314535.233584%
C277632590.932896%
D27763503818.146454%

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 31493 27768 2152 2152 6.83% 7.75%
B 31493 27767 814 814 2.58% 2.93%
C 31493 27768 120 120 0.38% 0.43%
D 31493 27767 4544 4544 14.43% 16.36%

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 10683045 16560.53 3166 3105 644.9
A 15 223 725831 1120.67 3166 3105 644.9
A 15 239 289222 443.66 3166 3105 644.9
B 4 239 4698610 7552.83 3277 3204 621.7
B 0 214 141611 222.64 3277 3204 621.7
B 4 173 126399 198.17 3277 3204 621.7
C 4 254 840646 1128.53 3214 3242 742.0
C 14 234 31358 37.89 3214 3242 742.0
C 13 61 23811 27.72 3214 3242 742.0
D 1 52 13159812 18410.38 2923 2840 714.6
D 5 222 944797 1318.07 2923 2840 714.6
D 12 233 294566 408.21 2923 2840 714.6

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